Change LiveTracking structure, add music player intent, add achievement fragment
add questionmark icon, add achievement db and functions, add achievement class and fragment
Get addAchievement and getAchievement to work
different icons for achievements, fix table create query for workout, change achievement KEY_UNIT datatype from REAL to TEXT
Prepare for achievement expandable list (create list_group and getAchievementsByUnit), create a lot of achievements
Update AchievementFragment comment
set up expandable list, design it, add 'achieved' attribute to achviement, save state of list groups (expanded/collapsed) and load it on access