Change how the app removal migrations work to cope with South 0.8 (which catches the DatabaseError exceptions we used to catch)
Don't pin any pip module versions
Add require_debug_false filter to mail_admins
Remove deprecated URLField option 'verify_exists'
re-pin haystack versions (xapian-haystack not ready to use with Haystack 2)
Use more recent haystack version to fix MAX_SHOW_ALL_ALLOWED deprecation issue
Switch direct_to_template usage to TemplateView