API-98 Add new error codes and delete some unused
API-98 Add new error codes
Added custom error codes for user operations
Remove duplicate entries
Update library name
Update library name
Change the way regular expressions are validate

Before if a parameter has a regular expression to validate, always was validate against this regular expresion instead the parameter wasn't required. Now if the parameter isn't required and the parameter values is null or '' the regular expression isn't validate.
Fixed bug in the process of the service config parameter 'minlen'
Added gt, ge, lt and le service parameters validator
Merge branch 'develop'
Merge branch 'master' of github.com:Akamon/ApiUtilities