refactor(api) default schema - numbers are numbers (not strings any more)
feat(ui) document and count inputs added + introduced error icon on
inputs
fix(ui) input error icons placement fixed for input-xs
fix(ui) percent directive doesn't crash for no input
fix(ui) percent directive is applicable to attribute only
test(ui) percent directive undefined input test fixed
refactor(ui) json validation moved to (json) directive
refactor(ui) File/New Tab radio display
fix(ui) column inputs not draggable (=> dropdown now selectable via mouse in firefox)
style(ui) comments + formatting
fix(ui) form-control-feedback status icon placement fixed