Formatless Copy/Paste not working.

When paste action was made the formatlesshandler was never called. We manually call this handler before pasting the content into the DOM element.
Merge branch 'hotfix-formatlesspaste-not-working-rt56692' of github.com:najor/Aloha-Editor into najor-hotfix-formatlesspaste-not-working-rt56692

Conflicts:
	build/hotfix-changelog.md
	src/plugins/common/paste/lib/paste-plugin.js
clean up paste plugin a little