* Don't check file permissions on every request, handle failures
Improve error page visually
* only print minimal mkdir
* invert file_exists check, whoops
* docblock
* revert accidental changes
* rename variable
* Change database errors to use the new layout
* Add support url to the default layout
* Replaced \n for && in fix for user perms
* fix web output
* refactor: convert validations to modules to prep for gui integration
* accidentally dropped, schema update
* fix accidental output to webui
* mention discovery-wrapper.py and re-arrange.
* refine some fix statements
* rename the Config validation group to Configuration.
* fix some scrutinizer issues
remove as many local functions from validator.php as possible
move extensions from pre-check
remove duplicate timezone check
looks like there is some db schema differences between mariadb 10.1 and 10.2, investigating
* mariadb version diff take2
* Check schema version first for database.
Remove stop to go back to command line for install docs.
Add helpful link when there is no devices added to /addhost
* fix incorrect validation for empty string defaults
* Fix style
* Add additional file permissions checks
* catch exception and fail for invalid timezone
Change visuals a bit.
* add php version warning
* fix space
