* add AlertSchedule model and relationships
change table structure to match the expected layout
* Update maint schedule map ui
* better index name
* Laravel queries
fix some issues with the ui: restricting start incorrectly and loading empty days error
* handle date limiting properly
* Another attempt add schedule constraints
* use Auth
* Update WorldMap widget to use check isUnderMaintenance
* Rename 275.sql to 276.sql
* Rename 276.sql to 277.sql
* Use Laravel for authentication
Support legacy auth methods
Always create DB entry for users (segregate by auth method)
Port api auth to Laravel
restrict poller errors to devices the user has access to
Run checks on every page load. But set a 5 minute (configurable) timer.
Only run some checks if the user is an admin
Move toastr down a few pixels so it isn't as annoying.
Fix menu not loaded on laravel pages when twofactor is enabled for the system, but disabled for the user.
Add two missing menu entries in the laravel menu
Rewrite 2FA code
Simplify some and verify code before applying
Get http-auth working
Handle legacy $_SESSION differently. Allows Auth::once(), etc to work.
* Fix tests and mysqli extension check
* remove duplicate Toastr messages
* Fix new items
* Rename 266.sql to 267.sql