pep8
rm css pointer from badge
fix some save boxes
refactor selection templates
fix invalid html
fix input.button line-height in firefox
style comments outside of comment lists
dont show poll in proposal header tile
thumbnail badge list formatting (fixes 414)

The problem was that for long titles the meta information
was under the thumbnailbadge and therefore not aligned
with the heading.

I fixed that by wrapping heading and metadata in an additional
div and setting `overflow: hidden` in that div.
fix same issue (#414) for instance logos
fixup f3e57ab

The issue from comment [1] has originally only been fixed in one
of multiple similar places.

Also pep8.

[1]: https://github.com/liqd/adhocracy/pull/499#discussion_r6410984
Merge branch 'develop' into geo

Conflicts:
	src/adhocracy/templates/proposal/tiles.html