Added revision stats
Fixed titles
Fixed revison stats order
Songs can be liked from hitparade (closes #27)
Hitparade: Newest songs can be liked
Added song scores
Fixed nick min lenght in song reuest form
Added song request stats
Reformated HTML in admin dashboard
Added genre graph
Moved song graph implementation to dashboard presenter
Enhanced graphs
Fixed dashboard moreinfo links
Fixed revizor -> žadatel
Released v3.0.6