Revert of ROL-1933, removing Crowd Atlassian integration from Roller (See ROL-1933 for changes necessary for individual users to incorporate V2.4 of it, also http://markmail.org/message/tyxrhzclkycovd4p for reasoning for removal.)

git-svn-id: https://svn.apache.org/repos/asf/roller/trunk@1511052 13f79535-47bb-0310-9956-ffa450edef68