Use staticroot when declared in HEAD
Removed some leftover references to scaninfo .elt properties and moved scan/page button click handlers out of the HTML
Made domscan descend deeper to get internal spans, etc
Made pageinfo tool handle lots of pages by using % positions for each span
Fixes to getTarget
Made setting experts sometimes narrow the fragment associated with a gloss
Made gloss addition work better on cached layouts
Minor fix to pageinfo display
Use new layout saving functionality based on indexedDB
Merge branch 'master' into refdb