Adding MY_User_agent to 2.2/develop
fix ob_end_clean error
Add ogv and webm to supported mimes and file types. Closes #3317 and
revert pages admin
Checkbox fix manually applied
Validate files

https://github.com/pyrocms/pyrocms/pull/3011
Validate images too while we're at it.
Fix image field type validation.
PHP strict bitches about this.
Fix the pagination in the redirects module
Remove changed to MY_User_agent and move to separate branch