Move jsDocTag @file to a different jsDocTag group

Apparently there is no `nextgroup` match for the @file type.

Fixes pangloss#341

Author: amadeus

syntax/javascript.vim

@@ -63,15 +63,15 @@ if !exists("javascript_ignore_javaScriptdoc")
   syntax region jsBlockComment    matchgroup=jsComment start="/\*\s*"  end="\*/" contains=jsDocTags,jsCommentTodo,jsCvsTag,@jsHtml,@Spell fold
 
   " tags containing a param
-  syntax match  jsDocTags         contained "@\(alias\|api\|augments\|borrows\|class\|constructs\|default\|defaultvalue\|emits\|exception\|exports\|extends\|file\|fires\|kind\|link\|listens\|member\|member[oO]f\|mixes\|module\|name\|namespace\|requires\|template\|throws\|var\|variation\|version\)\>" nextgroup=jsDocParam skipwhite
+  syntax match  jsDocTags         contained "@\(alias\|api\|augments\|borrows\|class\|constructs\|default\|defaultvalue\|emits\|exception\|exports\|extends\|fires\|kind\|link\|listens\|member\|member[oO]f\|mixes\|module\|name\|namespace\|requires\|template\|throws\|var\|variation\|version\)\>" nextgroup=jsDocParam skipwhite
   " tags containing type and param
   syntax match  jsDocTags         contained "@\(arg\|argument\|cfg\|param\|property\|prop\)\>" nextgroup=jsDocType skipwhite
   " tags containing type but no param
   syntax match  jsDocTags         contained "@\(callback\|define\|enum\|external\|implements\|this\|type\|typedef\|return\|returns\)\>" nextgroup=jsDocTypeNoParam skipwhite
   " tags containing references
   syntax match  jsDocTags         contained "@\(lends\|see\|tutorial\)\>" nextgroup=jsDocSeeTag skipwhite
   " other tags (no extra syntax)
-  syntax match  jsDocTags         contained "@\(abstract\|access\|accessor\|author\|classdesc\|constant\|const\|constructor\|copyright\|deprecated\|desc\|description\|dict\|event\|example\|file[oO]verview\|final\|function\|global\|ignore\|inheritDoc\|inner\|instance\|interface\|license\|localdoc\|method\|mixin\|nosideeffects\|override\|overview\|preserve\|private\|protected\|public\|readonly\|since\|static\|struct\|todo\|summary\|undocumented\|virtual\)\>"
+  syntax match  jsDocTags         contained "@\(abstract\|access\|accessor\|author\|classdesc\|constant\|const\|constructor\|copyright\|deprecated\|desc\|description\|dict\|event\|example\|file[oO]verview\|final\|function\|global\|ignore\|inheritDoc\|inner\|instance\|interface\|license\|localdoc\|method\|mixin\|nosideeffects\|override\|overview\|preserve\|private\|protected\|public\|readonly\|since\|static\|struct\|todo\|summary\|undocumented\|virtual\|file\)\>"
 
   syntax region jsDocType         start="{" end="}" oneline contained nextgroup=jsDocParam skipwhite
   syntax match  jsDocType         contained "\%(#\|\"\|\w\|\.\|:\|\/\)\+" nextgroup=jsDocParam skipwhite