RC cleanup

The idea behind this cleanup is to encourage the individual startup scripts to use as many parameters from a "default" file: one for MC, one for FW.
This should give:
- better overview, better maintanability
- clean difference between models
- less lines to flash
- no non-intuitive includes in a hexa script like:
```
sh /etc/init.d/4001_quad_x
```

A lot of default params have been deleted for MC. Since they were all pretty similar, this shouldn't matter. Also, some were not tested using the new vector controller anyway.

Also, for FW, I've deleted most of the parameters. Since the fixedwing controller has changed a lot, the models all need re-tuning anyway. The default parameters come from the X5 and are hopefully a decent starting point for other models.


The following scripts have been tested on the bench:

- 4010 DJI F330
- 6001 Hexa X
- 10016 3DR IRIS

- 3032 Skywalker X5 (Mixer needs checking)

Flight tests scheduled for tomorrow. So please don't merge yet.