critical state moved into STATES in json files

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Added triple point states

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Added minimum saturation states to fluid files

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Update parsing of the fluid JSON files for the new state architecture

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Fixed loading bugs of new JSON files

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Updated web files

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Merge branch 'master' of https://github.com/coolprop/coolprop