Julia frontend

This layout divides the loan profile page into tabs, but I think the collapse-show functionality needs to be done in JavaScript.  Once that is added I can work more on the discussion and repayment tabs.  The tab style itself is a placeholder, as I'd like to find something nicer-looking.

Similar to Airbnb, the lend form modal box (or status box for active loans) would appear to the side and fixed at the top in tablets, and fixed to the bottom in mobile devices.  The "Follow" button would not be fixed to the top, it would just be covered by the lend form as one scrolls down.

This layout also assumes we'll expand the mobile version of the form when the "Lend" button is clicked, probably to fill the screen, reveal the hidden amount/interest form fields and change the button text to "Next." I can work on formatting that part of it once you have the chance to add the extra expansion step.

I replaced the "receive an email..." explanation for the follow button with a tooltip, but haven't managed to get the text to wrap and fit into the tooltip box.

We should probably round the "amount still needed" display up to the nearest dollar.  The downside is that it will sometimes result in decimal amounts being outbid by whole dollar amounts, but I think it's worth it to be able to present a cleaner interface to prospective lenders.  In the longer term we could fix that by only allowing whole-dollar amount bids and rounding loan request amounts to the nearest dollar.