Fix: query.engine can be 'MySQLdb' for msyql.

query.engine could be 'mysql' or 'MySQLdb' for mysql driver.
Merge pull request #530 from djfarrelly/master

Remove dependency on jquery-cookie plugin
Merge pull request #513 from ifduyue/fix-ifequal-mysql-engine

Fix: query.engine can be 'MySQLdb' for msyql.
Take advantage of default_app_config.

This is really going to help reduce complaints, given that we don't have
a good place to put upgrade instructions.
Account for the signal changes in Django 1.7.
Remove line endings to avoid issues with browser normalization.

Fix #533.
Fix stupid bug in previous commit.
Stop accessing non-existing 'url' attribute.

Fix #536.
Don't unbind all mousemove events

There was no namespace specified for mousemove event, which caused all document's mousemove event handlers to be removed.
Color-code SQL query "Timeline" stripes according to stacktrace
Merge pull request #538 from rivol/master

Don't unbind all mousemove events
Color-code SQL: minor code style changes
Color-code SQL: code review changes; fallback to black after 2**24 colors
Merge pull request #543 from wolfe/group-sql

Color-code SQL query "Timeline" stripes according to stacktrace
Make NormalCursorWrapper a context manager
 -- like django.backends.utils.CursorWrapper since Django #17671
Merge pull request #547 from DrMeers/master

Make NormalCursorWrapper a context manager
Add loading animation for panels. Fix #488.
Optimize used PNGs. Remove unused PNG and GIF.
XML validity.
Toolbar insertion test for middleware

Byte counts of "İ" and "İ".lower() are different.  If the page html
contains "İ", process_response() method cannot insert the toolbar
content at the correct index, and breaks the page content.