Began adding tests to prove that all end-points save on 200
Enforced saving strings when patching them.
Ensured that all strings/:table end-points save the data.
Asserted that users and projects are saved when edited.
Added tests to ensure that all end-points save properly.
Languages are printed in the UI.
Added editing of strings.

- Also added the beginnings of an icon-font.
Fixed a life-cycle issue where the table-view might not update properly when changing to a different table.
Strings can now be deleted.
Made the UI update optimistically on the assumption that ajax-requests will work out.
Updated the web-app to enable editing strings client-side.