Additional cleanup and bug fixed

  - Fixed bug in initialization of logging
    Prob: Race condition during plugin anme setiing
    Sol:  Shifted Log::name from Constructor to ::load

  - Cleaned some naming issues in FamousoPlugin
  - Changed of VRepPlugin to VREPPlugin

  - Included polymorphic printing of sensors
Refactored Position Sensor

  - Created PositionSensor class
  - Unified Proximity and Position Sensor in Plugin
  - Added missing clear to laserSubs