Get rid of unused colspan=2 cruft

We were only doing one-column layout.  Mostly harmless, but in some
places we were omitting the colspan statement, making browsers around
the world unhappy.

Also deletes some unused files.

Change-Id: I321872cf5ea855754875c9002c768fab55ccb1fb
Improve payments form layout

Justified alignment for the newer, large style inputs.

Also slurps in the responsive code for smaller displays.

Conflicts:
	globalcollect_gateway/forms/css/gc.css

Change-Id: I1ab66f67d4299311dd88d0aed67f518e4c61f485
Even out vertical layout on small devices

Change-Id: Id153b5be02c813a589760a9924348bb48010c655
Localisation updates from https://translatewiki.net.

Change-Id: I85e0f8b4d7d13dadc57def1a6c6c55ec1bbb15c1
Re-center CC icons in narrow screen view

Change-Id: I7145c5868e0979718686edd18680050f90155e4a