* Show composer status in web validate.
Don't duplicate in validate.php
* Create variable to check if a group has been completed.
No longer skips database checks.
Extract a base class.
Fix locate_binary and find_executable issues (mostly exposed by lack of db)
* Update Validator.php
* 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
