KerbalEVA updated through module, fixes

- changed the way how texture replacements for KerbalEVA are triggered
- further optimised personalised IVA replacements
- the state of EVA suit is saved for Kerbals on EVA
- when conditions for IVA suit are not met any more, a Kerbal on EVA
  automatically wears EVA suit
- removed `isToggleEvaSuitEnabled` config option, the EVA PartModule is now
  mandatory for texture replacement to work