Service Journey Map Modifications

(Warning: Will partially break existing saved models. Pls. check and
validate them.)
- Reversed direction of arrow between actor and touchpoint (actor
initiates a touchpoint; so arrow points away from actor and not
vice-versa)
- Added Service Experience Journey map
- Added "Unsatisfied", "Satisfied", and "Very Satisfied" emotional
touchpoints for Service Experience Journey mapping
- Added "Involves Link" association between an actor and a touchpoint to
signify involvement (input / output) of actor in the touchpoint
- Various cosmetic changes for better user friendliness