first commit
deck modes (one mode implemented); deck editing (very simple)
* deck editing fixed
+ card removal and adding implemented
import/export implemented (not fully working yet)
deck deletion WIP
Lots of improvement and bugfixes

* widget library converted to framework on it's own
* application restructured
* deck editions are now saved between sessions
* lots of bugs fixed
fixed deck creation
license and help text added
application now can store preferences
various modes of decks WIP
meditation and test modes implemented; deck deletion fixed; navbar now refreshes on decks update
fix show/hide help behavior; in Dump section revert button changed to cancel
implemented correct answer showing
greeting page and language choosing implemented
close #7
close #4
close #5, close #6
fixed bug with loading decks from localStorage; first true deck
some chaing issues with lodash
more nice Test mode