JSPWIKI-770: added test-repo for selenium execution.

git-svn-id: https://svn.apache.org/repos/asf/incubator/jspwiki/branches/MVN3_BRANCH@1480790 13f79535-47bb-0310-9956-ffa450edef68
JSPWIKI-770: parameterized tests so they can be reused across it-tests modules

git-svn-id: https://svn.apache.org/repos/asf/incubator/jspwiki/branches/MVN3_BRANCH@1480791 13f79535-47bb-0310-9956-ffa450edef68
JSPWIKI-770: added common webresources, so they can be reused across it-tests modules

git-svn-id: https://svn.apache.org/repos/asf/incubator/jspwiki/branches/MVN3_BRANCH@1480792 13f79535-47bb-0310-9956-ffa450edef68
JSPWIKI-770: updated description of module to reflect better the module intentionality

git-svn-id: https://svn.apache.org/repos/asf/incubator/jspwiki/branches/MVN3_BRANCH@1480794 13f79535-47bb-0310-9956-ffa450edef68