JSON bounding boxes and shell script dload
Reverting Gemfile.lock
divides options into Basic and Expert options, which default to hidden
s/expert/advanced/g
Merge branch 'alexbyrnes-expert_downloads' into feature/expertoptions

Conflicts:
	webapp/views/pdf_view.html.erb
make dropdown menu a drop-up menu when dropdown doesn't fit in viewport
Merge pull request #180 from jazzido/feature/expertoptions

divides options into Basic and Advanced options, adds JSON/tabula-extractor downloads