Allow navigating to other patches from a patch

If navigating to a patch from a series/revision view a ?series=x&rev=y
are appended to the URL.

This is later used on the patch view to determine whether browsing this
patch from the series view. If that's the case new navigation options to
go to next and previous patches in series are available.

Closes #13

Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
1 job for master in 2 minutes and 26 seconds (queued for 10 seconds)
Status Job ID Name Coverage
  Test
passed #151096
test

00:02:26