Remove OPFTagBrowserFooter as it is unused.

Signed-off-by: Aron Cedercrantz <aron@cedercrantz.se>
Tweak the looks of the questions matching label.

Signed-off-by: Aron Cedercrantz <aron@cedercrantz.se>
Tweak the selected tags button.

- It is is now just one UIButton and one image (arrow).
- The title of the UIButton is set dynamically depending on then number
of found questions and tags (so that we do not need to write
“question(s)” or “tag(s)”).

Signed-off-by: Aron Cedercrantz <aron@cedercrantz.se>
Merge branch 'master' of https://github.com/opfo/app

* 'master' of https://github.com/opfo/app:
  Reduce width of comment view's header holding count.
  Change sidebar to use OPFBarGradientView instead of OPFSidebarView.
  Update podfile.lock for comments-view branch.
  Fix minor bug in tag-loading.
  Add header for related tag in tag-browser.
  Deleted some code that wasn't used
  An user which is not logged in cannotpost questions, answers or comments anymore

Signed-off-by: Aron Cedercrantz <aron@cedercrantz.se>

Conflicts:
	Code Stream/OPFTagBrowserCollectionView.xib
	Code Stream/OPFTagBrowserViewController.m
Merge branch 'master' of https://github.com/opfo/app

* 'master' of https://github.com/opfo/app:
  Add placeholder text to search bar.