* [Companion] Re-format Inputs list to format input name consistently with rest of UI; Add leading zeros to RawSource numbers in names; Show custom channel name in MixerDialog.
* [Companion] Remove colon separator between input number and custom name.
* Fix segfault when no model pointer is passed to RawSource::toString() (problem was only on this branch).
* Generated new French .ts file.
* Update French translation concerning the new SD sync mechanism.
* Skip must be translated as "Ignorer", not "Sauter".
* French mistake.
* Complete re-write of SyncProcess, now more robust, UI-independent, runs in own thread, large speed boost;
* Use file hash comparisons instead of byte-level compare with string methods (probable fixes for #4837 and #4848);
* New pre-sync options dialog with selectable folders and other settings (settings are remembered until app exit);
* Option to choose sync direction(s) (up/down/bi) and the order in which bi-directional sync runs;
* Option to choose file comparison mode (timestamp/hash/both) or force overwrite (for one-way sync);
* Option to set a maximum file size to copy;
* Option to do a test run w/out actually copying any files;
* Better reporting of progress, total counts (copied/updated/skipped), and errors, with color coding;
* Much more reliable to cancel long-running/hung copy process;
* ProgressWidget can now display rich-text in the text browser, added some new functions for usage;
* Misc. small layout tweaks to ProgressDialog and ProgressWidget to make them behave/look better;
* [Companion] Model editor Setup panel: Prevent bogus modification signals, eg. when populating protocols box or when removing focus from some fields w/out the value actually changing; Remove unnecessary function.
* [SetupPanel] Fix comparison warning and also a translation issue with Multiprotocols subtype and option names.
* [ModelPrinter] Add a missing include.
* [Companion] Radio -> General Settings -> Hardware: Hide external serial port option for Horus; Fix battery voltage and current calibration changes not registering (wrong signal handler name); Prevent modified() event if edited value wasn't actually changed (this is a problem in all panels with onEditingFinished() signals); Fix some cosmetic layout issues when no hardware names are editable.
* [HardwarePanel] Minor layout fix for BT option.
* [HardwarePanel] Fix comparison issue.
Thanks Mike for noticing: In pxx_arm.cpp, the pulse duration is set to either 48 or 32. This value gets put into the ARR register of the timer (via DMA). Counters count from 0 to the ARR value, then go back to 0. This will result in either 49 or 33 counts for the pulse width, thus making the pulses 0.5uS too long.
Tested only with external PXX
