Also, changed an if(true) then true; else false; code
Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>

The goal of this first installment is to organize the code a bit so it's more readable,
clean up a bit of left over cruft, and manage link configurations (and links in general).

There's also a partial fix for the databits and stopbits. I'm unsure how to deal with the logic
around the 'is_cdc' variable, as I can't really follow what it's for.

Replaced with only 1 output message with the result of the first serial port scan.

This commit unifies the supported baud rates completely across QGC and OSes.

Minor cleanup, fixed a bug where the serial port would not connect on first application launch on Linux

Cleaned up serial link handling, eliminated double menu entries and safeguarded the link list. Did intentionally not improve the object dependency issue, will work on that on a global scope

Added not yet working version of logging / log replay, fixed ALL bugs in main window, enabled full persistence in main window and serial link.

Added new options for windows serial port, fixed a number of bugs, added customizing options to instrument widgets