Plus change to use QGCFileDialog

- Logging now always on to temp file
- User prompted to save temp file after disconnect
- Orphaned temp logs checked for on boot
- Logs saved to new save file location
- Log file starts/stops with first and last connnection

Also fixed bug in loadStyle

The dark css is the master and contains all style information. The
light css is the slave and only contains color information.

This is the Pixhawk research board, not the PX4 production board.

Settings versioning is handled at the uppermost level with a version
stamp.

No major functionality changes.

Tried to order items in order of importance.
Also all perspectives now have their own shortcuts.

Both on the backend (replaced with DEFAULT view) and on the front end (removing UI menu items).

Includes removing an if-statement that should've been dead but was erronously applied to the following statement. Dead code = bad, if-statements without braces = bad.

This was deprecated on Febuary 3rd, 2014 and removed a little later. This finally completes that process.

SLUGS has maintained their patches out-of-tree for a long while now.
These will eventually get merged back in, but it'll be easier to evaluate them as fresh commits instead of modifications to this old & dead code, so we'll delete this for now.

Some functionality was lost, will need to be fixed in a later commit.

Fix HIL link reconnect issues due to missing threading flag usage, warn user about missing config and take him to config view if necessary

Fix HIL link reconnect issues due to missing threading flag usage, warn user about missing config and take him to config view if necessary

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>