Don't use knockout for badge edit in proposal index page

This does the same as 66da51abd3a6be46ca94e52330c6ef20c807d37d for the
large map page in geo.
Remove unneeded <br /> in large map template
pep8
Fix large map title
geo: Remove unneeded scss file
Fix custom header on top of map header

We don't do a dotted line on top anymore as this doesn't work if this
sidebar block isn't the first, which is now possible in the instance
overview page.
geo: Adopt to develop: s/new_proposals_pager/proposals_pager

e957e4ecebb9f28367017586659081c969fd4c22