Symfony 2.4, Twig 1.15
Merge pull request #791 from derrabus/patch-4

Symfony 2.4, Twig 1.15
Fixed CHANGELOG
Fixed layout
Deleted obsolete file
Added tag intersection based search (#743)
Moved code with global functions to helper class, closes #743
Fixed layout
Removed jQuery and Modernizr from repo because it's bundled via Bower
Removed jQuery plugin Sparklines from repo as it's bundled via Bower
Removed jQuery datepicker plugin from repo, added Bootstrap DatePicker via Bower
Added missing check on query string
We're on PHP 5.4
Throw exceptions if logfiles could not be written (#771)
Basic debug output for frontend (#771)
Added PHPUnit as dev requirement, fixed fatal error
Added missing DbUnit dependency
Updated composer.json / composer.lock
Readded jQuery
Fixed captcha image layout