Minor UI updates
This MR supersedes MR !45 (closed) opened by @ayomitide007. It accepts a few of the changes from that, while reverting some of the unneeded or unapproved changes (i.e. ones that we need to consider more before implementing).
The two accepted changes are,
- Increases the height and width of the close button on the tabs, which may fix #81 (closed)
- Adds a url formatter that removes the http and www prefixes from the displayed urls, #80 (closed)
I still need to test that these changes work as intended, @TaslimOseni and @sphalt2 please give a quick look at these to make sure they look OK.