Improved description for symbols in device.dcm
Improved description for symbols in device.dcm

This PR improves documentation for a number of symbols in the device library:
* Added description for CRYSTAL_SMD
* Fixed spelling of potentiometer
* fixed spelling and tags for a number of diodes
* Added missing tags to a number of symbols
* Fixed spelling of *filtre* to *filter*
* Added missing description for fuses / inductors / jumpers / LEDs
* Improved description for a number of switches

jkriege2/kicad-library,stambaughw/kicad-library,true-nature/kicad-library,hyOzd/kicad-library,cafee/kicad-library,lkundrak/kicad-library,stambaughw/kicad-library,crackerizer/kicad-library,jkriege2/kicad-library,hyOzd/kicad-library,pointhi/kicad-library,lkundrak/kicad-library,crackerizer/kicad-library,true-nature/kicad-library