Drawerlayout Toolbar

http://www.jianshu.com/p/0c2e56748cd9

http://stackoverflow.com/questions/26440879/how-do-i-use-drawerlayout-to-display-over-the-actionbar-toolbar-and-under-the-st

https://github.com/chrisbanes/cheesesquare

padding-between-actionbars-home-icon-and-title
http://stackoverflow.com/questions/9737101/padding-between-actionbars-home-icon-and-title

How to catch navigation icon click on toolbar from fragment?
http://stackoverflow.com/questions/31311612/how-to-catch-navigation-icon-click-on-toolbar-from-fragment