[AndyB] Development mode 1.4

Description:
Enable or disable development mode from the admin control panel index.
Enabling development mode is required if you want to edit Cron entries, Template modification or Master templates.
Features:
All phrases start with developmentmode_ for your convenience.
Setup:
Go to the add-ons options page and enter the path to your config.php file.
Questions and answers:
Q: Do I have to be a super-admin to use this add-on?
A: Yes.
Note:
If you have PHP-FPM or LiteSpeed enabled, use the Development mode options v1.0 add-on instead of this add-on.