[BUGFIX] Make argument layout act as documented
[BUGFIX] force close tag "script"

Tag "script" must be closed for not messing up the page. Actually, the
self-closing XML syntax <script /> is correct XML, but for it to work
in practice, the web server also needs to send the XML mime-type
like application/xhtml+xml and not as text/html which is not something
we want by default.
[BUGFIX] Make argument linkCurrent act as documented
Merge pull request #73 from fudriot/master

[BUGFIX] force close tag "script"
[TASK] CGL cleanup
[TASK] Refactor to increase readability
Merge pull request #72 from dreipunktnull/langmenu

[BUGFIX] Make arguments act as documented
[BUGFIX] Fix syntax error in LanguageMenu ViewHelper
[BUGFIX] Return empty string from LanguageMenu ViewHelper if menu is empty

This makes the LanguageMenu ViewHelper work just like the other Menu ViewHelpers when the menu is empty.

Fixes: #66