Update link target to Lucene 5.5 query syntax, moving the link to the page.

Update the link target to the query parser syntax page of the 5.5 version.

Refactor the `LuceneSearchPage` to use an `ExternalLink` for the link
to the lucene page, so that the link target is kept and updated in the
Java code. Move the link out of the language files. This was way too
cumbersome to update the link target (which is probably why no one ever
did).

The query help text is changed to contain a variable:
`gb.queryHelp = here be some ${querySyntax} help`, which is replaced by
Wicket with a link.
The link text is a new lange file property: `gb.querySyntax`.

Author: fzs

src/main/java/com/gitblit/wicket/GitBlitWebApp.properties

@@ -218,7 +218,8 @@ gb.pages = pages
 gb.workingCopy = working copy
 gb.workingCopyWarning = this repository has a working copy and can not receive pushes
 gb.query = query
-gb.queryHelp = Standard query syntax is supported.<p/><p/>Please see <a target="_new" href="http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/queryparsersyntax.html">Lucene Query Parser Syntax</a> for details.
+gb.queryHelp = Standard query syntax is supported.<p/><p/>Please see ${querySyntax} for details.
+gb.querySyntax = Lucene Query Parser Syntax
 gb.queryResults = results {0} - {1} ({2} hits)
 gb.noHits = no hits
 gb.authored = authored

src/main/java/com/gitblit/wicket/GitBlitWebApp_cs.properties

@@ -773,7 +773,8 @@ gb.transportPreferenceDescription=Vyberte transport, kter\u00fd preferujete pro
 gb.sortHighestSeverity=nejvy\u0161\u0161\u00ed z\u00e1va\u017enost
 gb.diffFileDiffTooLarge=Rozd\u00edl je p\u0159\u00edli\u0161 velk\u00fd
 gb.missingIntegrationBranchMore=C\u00edlov\u00e1 integra\u010dn\u00ed v\u011btev v repozit\u00e1\u0159i neexistuje!
-gb.queryHelp=Standardn\u00ed syntaxe dotaz\u016f je podporov\u00e1na.<p/><p/>Pod\u00edvejte se pros\u00edm na <a target="_new" href="http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/queryparsersyntax.html">Lucene Query Parser Syntax</a> pro detaily.
+gb.queryHelp=Standardn\u00ed syntaxe dotaz\u016f je podporov\u00e1na.<p/><p/>Pod\u00edvejte se pros\u00edm na ${querySyntax} pro detaily.
+gb.querySyntax=Lucene Query Parser Syntax
 gb.diffTruncated=Diff o\u0159iznut po p\u0159edchoz\u00edm souboru
 gb.blame=blame
 gb.imgdiffSubtract=Od\u010d\u00edtat (\u010dern\u00e1 = stejn\u00e9l)

src/main/java/com/gitblit/wicket/GitBlitWebApp_de.properties

@@ -218,7 +218,8 @@ gb.pages = Seiten
 gb.workingCopy = Arbeitskopie
 gb.workingCopyWarning = Dieses Repository besitzt eine Arbeitskopie und kann keine Pushes empfangen
 gb.query = Abfrage
-gb.queryHelp = Standard Abfragesyntax wird unterst\u00fctzt.<p/><p/>Unter <a target="_new" href="http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/queryparsersyntax.html">Lucene Query Parser Syntax</a> finden Sie weitere Details.
+gb.queryHelp = Standard Abfragesyntax wird unterst\u00fctzt.<p/><p/>Unter ${querySyntax} finden Sie weitere Details.
+gb.querySyntax = Lucene Query Parser Syntax
 gb.queryResults = Ergebnisse {0} - {1} ({2} Treffer)
 gb.noHits = Keine Treffer
 gb.authored = ist Autor von

src/main/java/com/gitblit/wicket/GitBlitWebApp_es.properties

@@ -218,7 +218,8 @@ gb.pages = P\u00E1ginas
 gb.workingCopy = Copia de trabajo
 gb.workingCopyWarning = Este repositorio tiene una copia de trabajo y no se le puede empujar
 gb.query = Consulta
-gb.queryHelp = Se admite la sintaxis de consulta est\u00E1ndar.<p/>Por favor, lee el: <a target="_new" href="http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/queryparsersyntax.html">Analizador sint\u00E1ctico de consultas de Lucene</a> para m\u00E1s detalles.
+gb.queryHelp = Se admite la sintaxis de consulta est\u00E1ndar.<p/>Por favor, lee el: ${querySyntax} para m\u00E1s detalles.
+gb.querySyntax = Analizador sint\u00E1ctico de consultas de Lucene
 gb.queryResults = Resultados {0} - {1} ({2} coincidencias)
 gb.noHits = Sin coincidencias
 gb.authored = Autor

src/main/java/com/gitblit/wicket/GitBlitWebApp_fr.properties

@@ -218,7 +218,8 @@ gb.pages = pages
 gb.workingCopy = d\u00e9p\u00f4t de travail
 gb.workingCopyWarning = ce d\u00e9p\u00f4t poss\u00e8de un d\u00e9p\u00f4t de travail et ne peut donc pas recevoir de pushes
 gb.query = recherche
-gb.queryHelp = La syntaxe Lucene standard est support\u00e9e.<p/><p/>Se r\u00e9f\u00e9rer \u00e0 la <a target="_new" href="http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/queryparsersyntax.html">Syntaxe de recherche Lucene</a> pour plus de d\u00e9tails.
+gb.queryHelp = La syntaxe Lucene standard est support\u00e9e.<p/><p/>Se r\u00e9f\u00e9rer \u00e0 la ${querySyntax} pour plus de d\u00e9tails.
+gb.querySyntax = Syntaxe de recherche Lucene
 gb.queryResults = r\u00e9sultats {0} - {1} ({2} hits)
 gb.noHits = aucun r\u00e9sultats
 gb.authored = authored

src/main/java/com/gitblit/wicket/GitBlitWebApp_it.properties

@@ -218,7 +218,8 @@ gb.pages = pagine
 gb.workingCopy = copia di lavoro
 gb.workingCopyWarning = questo repository è una copia di lavoro a non ammette push
 gb.query = interrogazione
-gb.queryHelp = La sintassi standard è supportata.<p/><p/>Si vedi <a target="_new" href="http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/queryparsersyntax.html">Lucene Query Parser Syntax</a> per ulteriori dettagli.
+gb.queryHelp = La sintassi standard è supportata.<p/><p/>Si vedi ${querySyntax} per ulteriori dettagli.
+gb.querySyntax = Lucene Query Parser Syntax
 gb.queryResults = risultati {0} - {1} ({2} corrispondenze)
 gb.noHits = nessuna corrispondenza
 gb.authored = creato da

src/main/java/com/gitblit/wicket/GitBlitWebApp_ja.properties

@@ -217,7 +217,8 @@ gb.pages = \u30da\u30fc\u30b8
 gb.workingCopy = \u4f5c\u696d\u30b3\u30d4\u30fc
 gb.workingCopyWarning = \u3053\u306e\u30ea\u30dd\u30b8\u30c8\u30ea\u306b\u306f\u4f5c\u696d\u30b3\u30d4\u30fc\u304c\u3042\u308b\u305f\u3081 push \u3067\u304d\u307e\u305b\u3093
 gb.query = \u30af\u30a8\u30ea\u30fc
-gb.queryHelp = \u6a19\u6e96\u7684\u306a\u30af\u30a8\u30ea\u30fc\u66f8\u5f0f\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002<p/><p/>\u8a73\u7d30\u306f <a target="_new" href="http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/queryparsersyntax.html">Lucene Query Parser Syntax</a> \u3092\u53c2\u7167\u3057\u3066\u4e0b\u3055\u3044\u3002
+gb.queryHelp = \u6a19\u6e96\u7684\u306a\u30af\u30a8\u30ea\u30fc\u66f8\u5f0f\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002<p/><p/>\u8a73\u7d30\u306f ${querySyntax} \u3092\u53c2\u7167\u3057\u3066\u4e0b\u3055\u3044\u3002
+gb.querySyntax = Lucene Query Parser Syntax
 gb.queryResults = \u691c\u7d22\u7d50\u679c {0} - {1} ({2} \u30d2\u30c3\u30c8)
 gb.noHits = \u898b\u3064\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002
 gb.authored = authored