Updated CSS and Wire Source Images

I updated some general styles today in app.css and bootstrap.css. I’ll
be moving on to fonts, spacing and general sizing of elements tomorrow.
I’ll sync up first thing in the morning in the case you need to make
any modifications this evening.

You’ll also find a replacement image(wingwire.png) for the main login
screen and I’ve also created a sub directory for the wire source logos
located in /Images/wire-sources