Tryst 0.5.2

Quality-of-life patch focused on the encounter editor and backup restore. Encounter editor: every catalog list (acts, positions, kinks, toys, occasions, finish locations) now has an "Add a new one..." field at the bottom of its More sheet - type a name, tap Add, and it's saved AND selected for the current tryst. No trip to Settings for a one-off entry. Fixes: drilling into "You" from People now has a back button and honours the system back gesture. Partner and profile pictures from older (v13/