Remove Redundant divs in Alerts

and some whitespace
Merge pull request #16 from Mnkras/error-dialog

Remove Redundant divs in Alerts
rename
tweaks to dashboard
Update minimum PHP version to 5.3.3

The Symfony minimum version is PHP 5.3.3
Update concrete5 minimum to that
Merge pull request #22 from mkly/php_5_3_3

Update minimum PHP version to 5.3.3
adding tableExists function, making it case insensitive
Merge branch 'master' of github.com:concrete5/concrete5-5.7.0
Fixing mysql strict errors; adding timestamp support to legacy library
Fixes #23
Fixes #15