the devil I don't know

• ungap: consolidate editing controls
• workaround some bugs loading map edits
• ungap: add ability to compare a trip before/after some proposed changes
• ungap: make the high-stress metric handle one side of a road missing bike lanes
• ungap route sketcher easier to use when zoomed far out
• ui fixes: units in barrier type, dropdowns focus-fighting with drag-drop cards
• perf: smaller city overview maps