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'
fix XSS vulnerability in conversations#new, closes #4010
Merge branch 'hotfix/0.0.3.2'
Merge remote branch 'upstream/master'

Conflicts:
	app/controllers/home_controller.rb
	app/views/home/show.html.haml
	script/server