Encode everything except a whitelist of special chars

see #2406
Translate text in changes section on save panel. (fixes #2417)
Remember raw tag editor expansion state across sessions (fixes #2416)
Use interpolation rather than concatenation
Update translations
Update imagery
1.6.1
Write presets and imagery to standalone files
Select first available imagery layer
Moved area-keys to data, and process it during runtime
Add tests and documentation for custom presets
Simplify and improve documentation of areaKeys
missing memo argument (fixes #2421)
Add test for #2421
Make taginfo configurable and default to disabling taginfo related features
Document deployment customization
Replace buttons with dropdown
Dropdown fixes
Fix .more-fields string
style adjustments + clean out unused code