Prevent trying to set the 'maxHeight' property of the secondaryToolbar before the viewer is completely loaded
Move PageView from viewer.js to its own file
Fix coding style in page_view.js
Merge pull request #3692 from Snuffleupagus/issue-3690

Prevent trying to set the 'maxHeight' property of the secondaryToolbar before the viewer is completely loaded
Merge pull request #3663 from Snuffleupagus/move-PageView

Move PageView from viewer.js to its own file