Updates to course page. Buttons. join header. etc
Merge branch 'course-beta' of https://github.com/p2pu/lernanta into course-beta
Merge pull request #193 from p2pu/course-beta

Accidental changes still from course-beta branch
changing height of thumbnails
merging
Updates to fonts, alerts, and cleaned up courses page
consistency for navigation
Merge branch 'master' of github.com:p2pu/lernanta
Use radio select input for switching between Draft, Published and Archived.
only show info text about adding content to people who can add content
Disable editting a course after it is marked as archived
update course creation copy
removed page tracking middleware
Add deleted flag to courses
Add hotfixes from running code.
Custom SQL query to replace slow generated query
Workaround for what I suspect is a caching error!
Point to correct URL for reporting bugs