Changelog:
- Added Alerts
- Added Meta Tag configuration
- Added option to select node when creating plan
- Added Purchase limit per user for certain plan
- Added option to disable PayPal
- Added option to set Login page theme (Dark or Light)
- Added option to set user background image & plan background in Admin Settings

(Bug Fixes)
Centered Plans
Fixed bug with CSS Color
Fixed issue when deleting plan whilst it is in cart
Fixed Balance link in user menu
Fixed Cart table on smaller screen