Merge pull request legalthings#15 from legalthings/minor-bug-fixes

Minor bug fixes + verbosity config option

Merge pull request legalthings#14 from legalthings/always-update-scale

Always update the scale property of the scope

Merge pull request legalthings#13 from legalthings/update-pdfjs-version

Updated the pdf.js-viewer version

Make scale property optional and set default properly

Updated pdfjsViewer's template so it includes printContainer, fixes l…

…egalthings#4

fixup dependency injection

Configure global settings through pdfViewerConfigProvider

Reimplemented the option to set the worker src
Added option to disable using the browser's Worker API

Updated bower.json

Improve reliability for on-page-load

If page unexpectedly gets unloaded, unset it from the `loaded` list
If `onPageLoad()` returns `false`, don't mark the page as loaded.
In that cases `onPageLoad()` is called again on the next (200ms) interval.

Attr to set workerSrc