Remove gap after removal of old script and addition of new

This is a shot-in-the-dark attempt to fix BL-583 which I have
not been able to reproduce and do not see how it is possible.
Fix failing JavaScript tests

Also fixes bug where word list is blank when the page first loads.
readerToolsModel.ts replaces readerTools.d.ts.
Make thumbnailer border options be solid, dashed, or none
SHRP_PupilBookExtensionWork
Fix clear formatting (ctrl+space) and add ctrl+u, ctrl+b, and ctrl+i
Allow a collection file to be dragged into the open collection dialog
Make thumbnailer not try to cache images that come with no key
Tweaks of SHRP-Uganda thumbnailing extension classes
Merge branch 'Version2.0'
Merge in drag 'n drop to choose collection
Merge branch 'Version2.0'
Merge pull request #112 from andrew-polk/BL583_AttemptToRemoveTimingGap

Remove gap after removal of old script and addition of new
Merge pull request #105 from phillip-hopper/Fix-JS-Tests

Fix failing JavaScript tests