Silence noise debug statements

This makes unit test output easier to read
Disconnect all links on MainWindow close

Previously link were just destroyed
New Mavlink Log collection unit test
Silence noise debug statements

This makes unit test output easier to read
Disconnect all links on MainWindow close

Previously link were just destroyed
New Mavlink Log collection unit test
Merge branch 'MavlinkLogTest' of https://github.com/DonLakeFlyer/qgroundcontrol into MavlinkLogTest

Conflicts:
	qgroundcontrol.pro
Make sure UAS is deleted on correct thread
New QTemporaryFile replacement
Change to use QGCTemporaryFile
Merge pull request #1063 from DonLakeFlyer/MavlinkLogTest

Mavlink log test