Handle user profile image upload without an image

The image upload button on the profile edit pages threw a 505 if clicked without an image to upload.
Merge pull request #224 from svoigt/master

Handle user profile image upload without an image
Fixed a typo in a copy

There was an extra apostrophe in a copy, that was removed
Merge pull request #226 from dirkcuys/master

Post release fixes
Merge branch 'master' of github.com:p2pu/lernanta