Firefox: Correct range when selecting text with key command 'shift+keydown'
Merge branch 'hotfix-0.24.x-rt50706' of git://github.com/najor/Aloha-Editor into najor-hotfix-0.24.x-rt50706

Conflicts:
	src/lib/aloha/selection.js
Merge branch 'najor-hotfix-0.24.x-rt50706' into hotfix-0.24.x