Ignore click event when adding note

Instead of double-toggling, ignore click events for some milliseconds
after adding a note.
Toggle note container instead of note boxes
Hide notes in scale_all
Use document fragment when loading notes
Fix note bounding on left edge

bound_position must be called after the body is shown, while resize must
be called before.
Merge pull request #1543 from zatchii/notespeed

Fixes to note rendering