Add initial styles for daterange markup
Don't import ; update less buildfile and css file
Don't import `.input-append .add-on`; update less buildfile and css file
add italian language
add russian translation
Added danish translation
fix header comments
Merge heads (RU and DA translations)
Merge heads
Provide build .less file to produce standalone .css file

--HG--
rename : build.less => build/build.less
Implement initial daterange picker
Trigger changeDate on keyboard navigation
Don't split with regexes - tricky cross-browser breakages

http://blog.stevenlevithan.com/archives/cross-browser-split
Added Dutch localization
Handle string and unusual values for weekStart non-catastrophically.
Implicitly convert weekStart to an int and mod by 7 to prevent weird values from destroying the integrity of the calendar.
Accept language setting from data-attributes
Autoclose now woks for component datepicker
Merge heads
Merge latest master changes into range branch

--HG--
rename : build.less => build/build.less