Adding code to allow for input validation to continue if value is empty instead of just being marked as valid if empty.  Required to test for validity of an empty value based on context.
Tests for added Continue If empty functionality.
Connect on get resource, for quoteValue
IBM Does not need the resource
Check if connection already is connected, and add unit test for PDO Connection getResource method
Cleaned up docblock
Only return one message when all identical
Fix for issue #4103

Fix for https://github.com/zendframework/zf2/issues/4103
Adding code to allow for input validation to continue if value is empty instead of just being marked as valid if empty.  Required to test for validity of an empty value based on context.
Tests for added Continue If empty functionality.
fix copy/paste low skill :]
View helpers cleanup
Merge branch 'hotfix/4138'

Close #4138
Fixes #4134
Adding basic service manager test
Optimizing ServiceManager#get
+ fixed naming 
+ added test for pgsql
Applying further minor optimizations
unit test for fix#4103

Test if the last char of the markup is '>' of '</select'>', and not the delimiter ':' that has to be removed if seconds are not shown.
+ fix pgsql test for empty string
Inlining `canCreate`