Made all comments line save

Signed-off-by: Schellenberger <schellenberger@inb.uni-luebeck.de>
Added the possibility to change g_KNa as parameter
Tuned parameters so that tau_Na is not changed anymore. 
The model shows similar response functions.
However, the N3 timeseries shows stronger 2Hz background oscillations

Signed-off-by: Schellenberger <schellenberger@inb.uni-luebeck.de>
Removed alpha_Na and tau_Na as input parameters as they are not needed
anymore.

Signed-off-by: Schellenberger <schellenberger@inb.uni-luebeck.de>
Removed the unecessary ODE file and made Iteration an Class function.
Not possible for grid setups though.  

Signed-off-by: Schellenberger <schellenberger@inb.uni-luebeck.de>
Reworked the stimulation protocol
Cleaned up some code and spell checked

Signed-off-by: Schellenberger <schellenberger@inb.uni-luebeck.de>