Title now changes when switching buffers

The issue with the title not updating during swiping between different
buffers has been fixed.

Fixes #64.
Fix crash on tablets where there is no title

In the bufferlist on a tablet, there is no title for the channel
available.  Since we sometimes try to set the visibility of the buffer
title, this was causing NPEs and crashing.

This bug is only present in 08-dev-b4.
Fix crash if you return to the app

Sometimes when you return to the app, if the background service has
died(or crashed), when it restarts bufferManager will be empty, and a
NPE will occur when the app tries to show the buffer.  Check that we are
connected first before trying to retrieve the buffer.

This was fixed based on a crash report in the google play developer
console, so not all details regarding it are present.
Add own custom crash error reporting

Added in ACRA(Application Crash Reports for Android).  Currently posts
any crashes and relevant information back to my server after asking for
confirmation.
Fix crash/weirdness when closing buffer

No longer crash when closing a buffer and then switching between the
remaining open ones.
Properly closes buffers so that we don't end up showing the "closed"
buffers contents due to caching in the FragmentStatePager.

Fixes #65
Add preferences for ACRA

Allow the user to control some aspects of the android crash reporter.
Can set email, set it to automatically send reports, or disable it
entirely.