Merge pull request #945 from joshmoore/rebased/develop/filemaker-npe

Handle null state on close in FileMaker (rebased onto develop)
Fix gateway's usage of fileset image links
Merge pull request #948 from mtbc/unicode-python

Add UTF-8 encoding header to Python scripts. (rebase)
Merge pull request #955 from jburel/rebased/develop/mt-toolbar

Mt toolbar (rebased onto develop)
Basic test of Blitz fileset methods. See #10613
Fix fileset query in insight
Merge pull request #938 from jburel/rebased/develop/big-image-rnd

Big image rnd (rebased onto develop)
Fix scrolling issue when zooming in/out (see #10477)
Change message to Loading tiles.
Add/remove listeners depending on state (see #10572)
Do not allow panning when loading tiles (see #10572)
Zoom in/out using mouse wheel (see #10575)
Improve painting of tiles. Better feedback.
Remove ref to unused fields.
Fix dragging of selected (see #10554)
Review zooming action for big images.
Remove cpmputedSize field.
Modify code to set the preferred resolution level (see #8475)
Fix init sequence when rnd is loaded
Clean code.