Update iDes to work with integers

- Replace iDes check boxes with integer input with
0 - use iDes, generate variables and save them to file
1 - use variables from file
2 - use input variables from mask

- Added Data_Output block - which sends a variable to a file.
- removed iDesign_En and _Off tools,  iDes input can be set to a
variable and turned on and off easily w/o a tool.

- Created new MATLAB scripts folder, adding it to the path declarations.

- Updated Nozzle module to output Ath during iDes.