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
+ fixed naming 
+ added test for pgsql
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
When displaying navigations three times last navigation has data of previous navigation.
Removed additional whitespace in short methods
Properties are sorted alphabetically
Methods are sorted to logical blocks: magic, renders, helper functions and setters/getters
Methods in blocks are sorted alphabetically
All helpers now follow this structure set*, get*, has*
Removed additional whitespace in short methods
Properties are sorted alphabetically
Methods are sorted to logical blocks: magic, renders, helper functions and setters/getters
Methods in blocks are sorted alphabetically
All helpers now follow this structure set*, get*, has*
Revert renaming PluginFlashMessenger to FlashMessengerPlugin