Proxy configuration improvements:

* Fixes RequestTypeChecker (always recompile patterns). Fixes #5
* Remove commons alternative and unused files.
* The Spring resources reference has been added to proxy-dummy-properties
* The scheduled task has been changed to execute each 60 seconds (instead 5 seconds)
* Unused test (common alternative) has been removed and BaseProxyServiceTest has been defined as an abstract class
* This changes are relevant to #6 #7 #8 issues