Merge branch 'develop' of https://github.com/MathieuCalba/mix-it-android into feature/editing-ui-styles
adding action bar titles
fix margin bottom and top in session detail
homogenize margin and modify value depending on screen size
fix dual pane determination : now only when smallest width is at least 800dp e.g.. not 7inch tablets
adding dual pane on home
adding dual pane layout for planning
on tablet in portrait, session content is like on smartphone, if there is not enough space left
Merge branch 'feature/editing-ui-styles' into develop