Refactor of annotator

[MasterOdin]

This is a rather large PR as it aims to fix a bunch of things in the pursuit of the singular task of "make the tests pass and have Github stop complaining about security bug in dependencies". (Note: much of the size of this PR is actually in updating saved copies of some of the dependencies in the shared folder).They are:

• Update all dependencies to latest versions
• Move the usage of "userId" to be self-contained within the LocalStoreAdapter and fix the broken inheritance model of StoreAdapter by LocalStoreAdapter which was causing a whole class of bugs with creating/editing/deleting annotations and comments.
• Fix being able to move annotations around the screen when using the cursor
• Fix not being able to delete icons when hitting "Delete" when selected on with cursor
• Add being able to hit "Backspace" to delete an element when selected on with cursor
• Disable being able to move paths until the logic is fixed
• Turn off trimming of left side of text (closes PDF Annotator text tool trims Submitty#2990)
• Test PointerEvents for drawing on both Firefox and Chrome (and all other browsers) instead of just on Firefox and falling back to combination of Mouse/Touch for Chrome (needs further testing once I get a tablet in)
• Turn on testing of both Firefox and Chrome in Travis
• Bugfixes for having the color names be shown on the web test
• Add "eraser icon" to web test next to existing cursor icon
• Limit deletion via cursor + backspace/delete/x-icon to be only for current user's annotations
• Allow flag within Store to allow deletion of any user's annotatations
• Add tests for eraser