Merge pull request #171 from kp52/develop

Remove checks for "export" dir during install
Merge pull request #172 from kp52/develop

Only log error if database selectable
Core class for running DBAPI only.
settings.inc.php and /user_settings.inc.php modified to create core modx object if needed.
Warning comments in settings.inc.php and user_settings.inc.php
Remove superfluous includes of DBAPI abstract class
Install class now extends Core class
Merge branch 'develop' of github.com:ClipperCMS/ClipperCMS into develop
Ensure settings.inc.php and user_settings.inc.php are included via require.
Removed user_settings.inc.php and added Core::getSettings()
Moved getFullTablename from DocumentParser to Core class.
Bugfixed Core::getSettings
Removed setlocale calls
Comment out IndexIgnore in htaccess with recommendation to uncomment it if possible.
Remove test_page language entry from simple_chinese-gb2312