update changelog; replace "pre" releases with a plain "head"

Conflicts:
	config/defaults.yml
exec foreman in script/server
Include our custom fileuploader on the mobile site too
move custom splash page login into the controller, fixes #3991
Fixed removing images from publisher on the profile and tags pages
Wrap text if too long in mobile notifications

Conflicts:
	Changelog.md
Sort tag followings alphabetically, not in reverse, fixes #3986
release 0.0.3.1
Merge branch 'hotfix/0.0.3.1'
Merge branch 'master' of git://github.com/diaspora/diaspora into prod