updated UPGRADE docs to include bundle exec before stopping delayed job
changed the order slightly of the upgrade steps, to upgrade rvm after stopping services. Also cd from and backto the directory to pick up the ruby and gemset changes
fix to deleting avatar images
moved changing avatar out of edit form, and is now accessible by a like under the picture, if editing is enabled
update default organisms data
refactor a bit
OPSK-37: add new/default images to all known mimes in seek
OPSK-37: add missing map in images dictionary
Revert "update default organisms data"

This reverts commit eaa0a7fb79108af8eb926abfa354e18acc42d533.
prevent the avatar being removed when editing a project, institution, person or programme
update tags
Merge seek-0.21 mercurial into seek-0.21

Conflicts:
	.hgtags
Merge branch 'seek-0.21'

Conflicts:
	app/models/avatar.rb
small fix to grammer in text
Merge branch 'seek-0.21'
skip/update some doi tests
dont use mint_doi_preview and minted_doi
fix creators field
add doi.gif
Merge branch 'alternative_doi'