Merge pull request #151 from fuzzgun/master

Use showMaximized
Merge pull request #153 from Atheros1/master

comment out old self.trayicon
Merge pull request #154 from Atheros1/master

Bugfix: Must use toAddress instead of addressInKeysFile if toLabel is blank when receiving message
Merge pull request #155 from Atheros1/master

Small changes to prevent or diagnose errors
fix bug that caused workerThread to crash when sending out an old v2 pubkey