Accounts: Move profile columns and data to User
Accounts: Get rid of Profile.fullname in favour of User.full_name
Accounts: Move PootleProfile.contributions to User.contributions
Accounts: Move profile_edit logic to accounts
Accounts: Get rid of User.get_profile()
Profile: Get rid of PootleProfile model (and its migrations)
Migrations: Update PootleProfile frozen models to point to User
Remove unused parts of profiles app

This will ease the task of moving used parts to the accounts app.

We kept all profiles app code around, without any changes besides
those strictly required to support Django 1.5+, to allow easy upgrade
by using diff to see the differences in the code, but now is no longer
necessary.
Move profile_tags template tags to accounts app
Profile views: Call the view directly, without any alias
Profile views: Move all profile URLs to accounts app
User: converted profile edit view into a CBV

This implies getting rid of pootle_profile app
User: adjusted profile views

As a result the profiles app was wiped out
Bugfix: Make migration run in MySQL as well
UNDO      changes in migrations