add jCenter() repository shortcut for Bintray's JCenter
Add jCenter repository for Aether
fix for GRAILS-9582 "Integration Test Fails with Multiple Datasources on Interactive Mode"
GRAILS-10929 - response.redirectUrl is incorrect in test cases if controller is wrapped with an AOP proxy
GRAILS-10869 - improve namespace handling for child url mappings

This is addressing a specific problem with a specific usage pattern but we need to look at this and improve the whole mechanism which is not currently designed to handle nested mappings very well.  More work pending.
Merge pull request #440 from longwa/GRAILS-10929

GRAILS-10929 - response.redirectUrl is incorrect in test cases if controller is wrapped with CGLIB proxy
Merge branch '2.2.x' into 2.3.x
GRAILS-10869 - improve the handling of nested url mapping

This improves on some statement management which was problematic for nested url mappings.
GRAILS-10883 - improve link cache key for resource attributes
add postgres driver dependency commented out as alternative to MySQL
fix for GRAILS-10903 "Plugin dependency errors (problem reading zip file)"
Merge branch '2.3.x' of github.com:grails/grails-core into 2.3.x
Revert "GRAILS-10803 Force file.encoding=UTF-8 by setting System.setProperty("file.encoding","UTF-8") in main method when process starts"

This reverts commit 754428b4fc1eb745d40f010537911e93f56db846.
fix for GRAILS-10916 "run-app command results in error if test environment is not forked"
Update RepositoriesConfiguration.groovy

> "jcenter" a la Gradle
Update RepositoriesConfigurer.groovy

> "jcenter" a la Gradle
Update Ivy resolver tests for "jcenter" repo
Update Aether resolver for "jcenter"
Standardizing to "jcenter" in Ivy resolver
Standardizing to "jcenter" in Aether resolver