better attributes for vendored and script-generated files

Author: dragoncoder047

.gitattributes

@@ -2,3 +2,9 @@
 drafts/* linguist-generated
 pages/* linguist-generated
 *.md linguist-detectable
+static/lv-lugin.js linguist-vendored
+static/prism.js linguist-vendored
+static/css/pygments_orig.css linguist-vendored
+static/css/prism_orig.css linguist-vendored
+static/css/pygments.css linguist-generated
+static/css/prism.css linguist-generated