Material design: Left side nav should open over toolbar
Materail design: Floating action button for new email action

This commit breaks automatic builds that pull dependencies from Maven Central,
because com.getbase:floatingactionbutton:1.0.0 has a minSdkVersion of 14. Local
testing indicates the library operates fine on API 10.

Builders will need to pull the source, change the minSdkVersion to 9, and then
run `gradle installArchives` to build and install the library locally. Then add
mavenLocal() to allprojects{repositories{}} in build.gradle.

An issue has been raised requesting official support for API 9+:
https://github.com/futuresimple/android-floating-action-button/issues/11
FloatingActionBar 1.1.0
Fixed deprecation
Material design: contact chips