starting a test for homework - can write some cards
can identify notes for homework
adding new element to array resource custom_study_options_labels
attaching bit of UI to custom_study_options_labels - a number of items can be indicated
self-study button launches a bare activity
added a close button to self-study
self-study activity loads the list of things to study
Merge branch 'develop' of https://github.com/ankidroid/Anki-Android into develop