Update and sort documentation from old wiki

[jlecoeur]

In the folder doc/docs, we have the source of the documentation published on http://lis-epfl.github.io/MAVRIC_Library/.

In the subfolder doc/docs/98_Pages_From_Wiki/ are all the pages that are outdated or that should be moved to another place.

TODO:

• Move information specific to LIS to the wiki on MAVRIC repository. Ex:
  • Pan ID of xbees
  • Board numbers
  • IMU calibration files
• Update other pages and move them to appropriate folder