errors handling base
Added and Skinned Error Message box

Also implemented the 'warn' method (auto-hides the error box after
1500ms)
Made the errors handling i18n friendly

Also changed the default behaviour when the translation key does not
exist
Added Photo edition
Merge pull request #58 from tobozo/errors-handling

Errors handling
Merge pull request #59 from tobozo/edit-photo

Added Photo edition
Fixed error box

Box was overlapping and preventing some buttons to be reached by the
mouse
Merge pull request #60 from tobozo/errors-handling

Fixed error box
Merge branch 'master' into apply-product-refactor

Conflicts:
	app/styles/colorMirror.less