Thicket Versions Save

• Fix various initial install preference setting issues
• Introduce db schema v2 (db rebuild required, UI will prompt)
• Handle plants which have the thicket guid but are not in database gracefully
• Fix module import logic to be robust against multiple instances of thicket being loaded (only one should be enabled at any given time)

• Add gallery search
• Attempt to fix absolute path determination for Laubwerk Install path

Development release for early testing and user feedback.