UI Updates and Raw Data Import

As we discussed, this makes the following changes:
* updates the design of the menu
* separates the structure and style of the menu from the code
* adds ability to import raw data that was previously exported

A few notes:
* several files have many lines changed due only to coding style/whitespace changes. I tried to limit the whitespace changes to single commits, so it should be easier to go through the changes and see where there were actual substantial differences in the code as opposed to whitespace/style.
* Bootstrap was used for styling the menu. In order to prevent this from impacting the style of the TagPro page, I compiled Bootstrap using [this](https://gist.github.com/98bf0501f6540833b3f3.git) as the top-level SCSS file. Now, with few exceptions, the styles are limited to elements within an element with the class '.bootstrap-container'.