More cleanup
Implemented thermal response time in heat actuators.
Test to heat actuator
Improvement to heat legend.
Submodule msg 827cdaa..1fec35a:
  > Fixed error in VibrationArray.
  > Modified device messages related to vibration.
  > Updated vibration reading data.
Merge branch 'master' of https://github.com/plsm/assisi-playground into heat

Conflicts:
	playground/AssisiPlaygroundMain.cpp
Bee elasticity and heat calibration.
Merge branch 'master' of https://github.com/larics/assisi-playground into heat
Added functionality to reset world temperature.
Merge pull request #37 from plsm/heat

Merging Pedro's changes to Heat Model (functionality to reset world temperature).
Commented out headless simulation because it was giving build errors.