Better styling; Add left column freezing
Generate random student names
Add Call-Over button, share button, menu button
Replace group selector with course selector in action-bar
Refactor and restructure code; more random data
Reimplement table with Fragment
Refactoring: variable and class renaming
Add fragment transition effect
Refactoring: factor out TableFragment updating and action bar setup; rename vars
Remove needless outer VerticalLayout in TableFragment
Make TextView with group name centered
Improve README: more troubleshooting and setting up explanations
Add red background color for absent students
Use real names for generating random name/surname pairs, students are sorted
Add group selection spinner