VcsRootDetector and NotifierError tests fixed (there were .git in T ot tmp dir above, so appropriate checker found its root,then error)

*roots for another checker (GitRootChecker) shouldn't be compared with expected because above test dir could be .git or something else;
*full parameter removed as unused;
*style
(cherry picked from commit 435817e)
HEAD branch filter in new log fixed
(cherry picked from commit 7793e6f)