Fixes #444
Added the theme selector
Merge branch 'themes' into develop
Minor
Bug fixes to settings page ordering
Minor
Use Parameters model instead of raw DB
Rewind DI to prevent double up bug
Add notes to changelog, controllers should use plural naming
YAML fields should be camel for PHP friendliness
Fixes empty pages from routing as home (/)
Throw an error when the active theme is not found
Files added
Files should not appear as themes
Show more detailed errors when custom error page is not enabled