LB-174 Internationalization dates doesn't work.

Added moment internationalization date loding in the requirejs i18n
plugin.
Added momenjs into build task.
Added global settings for all build tasks.
Fixed Language code loading from blog configuration.
i18n requirejs plugin is loaded only on load-theme module after blog
loading.
Moment lib changed to moment_with_langs for default fallback.
LB-1583 Plugins not working on Internet Explorer(9)

Map over array in ie ins't supported so use the underscore method.
Merge pull request #157 from nistormihai/build-reloaded

LB-174 Internationalization dates doesn't work.