gitweb: Drop the href() params which keys are not in %mapping
gitweb: Drop the href() params which keys are not in %mapping

If someone would enter parameter name incorrectly, and some key of
%params is not found in %mapping hash, the parameter is now
ignored. Change introduced by Martin Waitz in commit
  756d2f064b2419fcdf9cd9c851f352e2a4f75103
tried to do that, but it left empty value and there was doubled ";;"
in returned string.

Signed-off-by: Jakub Narebski <a6a1517a087f9f64a72f41a0de57ff01fbb0e412@gmail.com>
Signed-off-by: Junio C Hamano <dc50d1021234060e53ec42a77d526afa2fe07479@cox.net>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git