- removed useless checking

Fixed some comments, introduced wind scaling factor, fixed extensions issue, introduce windstorm data grom 16.11.2015 storm. Introduced kV dependency into powerfeed algorithm, it doesn't work though due to incomplete voltage class data for powerlines

- generic typed interpolation
- added 25 climate wind

- fixed cell checking

# Conflicts:
#	MES_Wind/frmMain.cs

- iList public using

- fixed checkers for PRM classes
- getters, setters minor changes

# Conflicts:
#	WindStressPRM/WindStressPRM.cs