First gradle release

It still has some UI glitches but it mostly appears to work. I found that when setting up my first host, the display didn't show my keystrokes but they were registered anyway. After that, setting up new hosts seems to have no problems.

Most importantly, it uses ConnectBot's sshlib so it supports all the newer handshake mechanisms that newer hosts require.

I don't have a release signing key, so this is only a Debug build and you'll have to sideload it.