Merges key and URL boxen
automagically fetches title for table from sheet name
show a 'loading' spinner overlay when fetching stuff from google drive
allow user to choose which columns to include and specify display labels for each
remove column form fields and start fresh if the user changes the spreadsheet key
Preview is set up, doesn't work.

This passes key and columns data to preview.html via URL parameters, but it fails to load the preview with an Uncaught TypeError: Cannot read property 'length' of undefined.

I've tested it with jQuery 1.11 unminimized to try to figure out the problem, but it fails with another TypeError: Uncaught TypeError: Cannot use 'in' operator to search for '98' in [["word","Word"],["use","Use"],["first-use","First Use"],["meaning","Meaning"],["origin","Origin"]] in code.jquery.com/jquery-1.11.0.js:592.
Fixes build error from absolute URL for template.html
Merging non-functional preview onto columns gui
cleaning up the build.zip file
Working preview
Merge pull request #5 from INN/preview

Working preview
Merge pull request #6 from INN/webapp-dev

Columns GUI and preview functionality