Layout issues with Chrome

[kouralex]

There seems to be some graphic issues in the recently released Skosmos 2.8 when it comes to Chromium-based browsers.

1. The 'In your language' part is not aligned properly
2. Feedback link is hidden when the viewport width is <= 400px
3. #counts and #statistics table headings and contents may overflow content area
4. There are cases of margin left even though first element of a new line (e.g., on Download this vocabulary in..)
5. The elements mentioned in 4) do not wrap
6. Vocabulary heading does not break-word
7. min-width for #search-field element?

Fixes should be backported to the 2.8 version.