first cut for selelction manager
add selector-specific events
add working clear function for selectors
updates for click and hover tools, add multi-select and button mode to click
restore selection property
add manual set selection method
factor out tooltip into its own annotation class
add contains method to layout boxes to test whether a point is inside
improvements to hover tool
partly working
remove unused jq plugin
merge master
restore wheel zoom
better toolbar dom structure
restore tap tool functionality
make sure one tool in each category is active
ESC clears selections
restore box tools (missing overlay)
updating styles for new template format
restore box overlay