Generic view interfaces
Resolve issue #803 caused by linker stripping the "Title" property from MvxActivity
reformat
Merge pull request #804 from mgjhl/3.2

Issue #803 - Linker stripping android property
Generic views for almost all platform specific base views
When deserializing dictionary -> object, include base class properties
Merge pull request #809 from ololabs/read-baseclass

When deserializing dictionary -> object, include base class properties
LinkerPleaseInclude: Add CheckedTextView Switch

Add CheckedTextView and Switch to linker inclusions otherwise these bindings will fail in release builds.
nuspec options added
Email Plugin: When trying to send email on android, only show apps actually capable of sending emails (instead of all apps able to simply send "data")
Do not use a title for the intent chooser, as to avoid breaking localization
Merge pull request #812 from mgjhl/3.2

Email Plugin: Only show real email clients on android
Merge pull request #808 from Stephanvs/generic-views

Implementation of Generic views