Optimize background video recorder app performance

My client wanted to improve the performance of the background video recording application that he had developed.

I took systrace of the app and identified what is causing sluggishness in his program.

Then, I helped him by:
1. Changing the model to contain only required info
2. Lazy loading the data and the images... more
https://github.com/maxneaga/open_dash_cam_android/