Fix regexp in ExtSourceXML.java

Fix and simplyfy regexp for serching for end of regexp from
configuration file.

Old regexp was designed with assumption that escape character in regexp
is '/' instead of '\'.
Allow other parameters in URL.
Merge pull request #277 from tauceti2/vootFixParams

Allow other parameters in URL.
RPC: Fixed method change lost on source format

- Fixed calling updateUser() when "usersrManager/updateUser" is called.
  Original fix was lost on source format.
Merge pull request #278 from zlamalp/fixup

RPC: Fixed method change lost on source format