Bad JS-Bug fixed

JS prevented default action on a Click on an Input-Field (like Buttons)
Updated Gemfile (Rails safety–Issue)
Bugfixing

Toggleing the Task-done is now working with JS
Done Tasks are now grey
Merge branch 'master' into development

merge Master
First try of Prioritiy-Popup-Menu
Merge branch 'development' of github.com:azapps/mirakel into development
Setting Priority of a Task now works
Security Fix
add  All Tasks-List
fix merge conflicts
Improve Login-Layout
add Loginfiles
fix issue 11
html-id wasn't unique
fix taskhandling in js
fix js all-lists
fix all-lists
First try of Keyboard-support
Merge branch 'development' of github.com:azapps/mirakel into development