Merge pull request #62 from dom-mel/master

Some Bugfixes
Merge pull request #63 from dom-mel/master

Always use @DISPLAY@ for visible label
allow @TRANS@ placeholder in template path
use correct default language in template action replacement
removed debug statement
prevent double encoding
refactored actions_template and added some tests
Removed unused strings. It should be accepted by translation tool too
Merge pull request #73 from Klap-in/master

Removed unused strings. It should be accepted by translation tool too
fixed dependent fieldset when using external labels
allow 0 and empty values in select box
fix php strict errors
Merge pull request #76 from Klap-in/phpstrict

fix php strict errors