Add asynchronycal load courses
Add asynchronycal load lessons
Add puul to refresh for courses
Add lastupdate time to courses
Add error message to courses header
Add headertoast and texture
Fix first studystruct load
Fix lesson date view
Fix courses and lessontypes DB tables
Replace navigation menu items
Add loading schedule struct if it not loading later
Add loading weekdays  if it not loading later
Fix lastupdate show actual;ized
Add show lesson to schedule
Fix pagertabstrip
Restyle toast
Add courses info dialog
Add weeks navigation in schedule fragment
Add move to today in schedule in first run
Add move to today in schedule in first run