Remove secrets masking from Debugger
Added __debugInfo() to Connection
Added __debugInfo() to Driver
Removed testNoDbCredentials() as it is no longer needed
Fixed CS errors.
Removed leading underscores.
Return connection status in debug.
Merge pull request #4542 from robertpustulka/3.0-db-config-debug

3.0 DB config debug
Make use of Security::salt() instead of Configure::read('Security.salt');
Fix RequestActionTraitTest
Merge pull request #4557 from stefanozoffoli/3.0

Make use of Security::salt() instead of Configure::read('Security.salt')...