Updating TinyMCE to 4.0.22
Update en-GB.ini

Add missing language string for My Profile page help screen URL.
Merge pull request #3481 from infograf768/tiny_4.0.22

Updating TinyMCE to 4.0.22
Merge pull request #3485 from Rajoz/patch-1

[#33639] Update en-GB.ini