enh(csharp) highlight generics in more cases (highlightjs#2599)

Author: TupikovVladimir

src/languages/cs.js

@@ -86,6 +86,14 @@ function(hljs) {
     ]
   };
 
+  var GENERIC_MODIFIER = {
+    begin: "<",
+    end: ">",
+    contains: [
+      { beginKeywords: "in out"},
+      hljs.TITLE_MODE
+    ]
+  };
   var TYPE_IDENT_RE = hljs.IDENT_RE + '(<' + hljs.IDENT_RE + '(\\s*,\\s*' + hljs.IDENT_RE + ')*>)?(\\[\\])?';
 
   return {
@@ -161,13 +169,16 @@ function(hljs) {
       },
       {
         className: 'function',
-        begin: '(' + TYPE_IDENT_RE + '\\s+)+' + hljs.IDENT_RE + '\\s*\\(', returnBegin: true,
+        begin: '(' + TYPE_IDENT_RE + '\\s+)+' + hljs.IDENT_RE + '\\s*(\\<.+\\>)?\\s*\\(', returnBegin: true,
         end: /\s*[{;=]/, excludeEnd: true,
         keywords: KEYWORDS,
         contains: [
           {
-            begin: hljs.IDENT_RE + '\\s*\\(', returnBegin: true,
-            contains: [hljs.TITLE_MODE],
+            begin: hljs.IDENT_RE + '\\s*(\\<.+\\>)?\\s*\\(', returnBegin: true,
+            contains: [
+              hljs.TITLE_MODE,
+              GENERIC_MODIFIER
+            ],
             relevance: 0
           },
           {