Adds experimental History Listing.

This is a first rough draft to get a list of logged dates and a tally of how much time was logged per day and week.
It still needs to but put in the right location and refined.
Accessable under the `/history/` URL (without any parameters).
Moves CSS from the index.html to the base.css
Moves the PHPUnit config file to the root.
Merge branch 'master' into develop
Removes explicit call to phpunit from Travis config file.