Make smaller resolution devices behave better

JabbR is currently not functional on most non-PC devices.  These changes try to improve the experience on devices with low resolutions.

* rejigged the way that the chat screen is structured to better support easier resolution changes (and multi pane), 
* fixed the overflow on the topic when it's too long, 
* fixed the tabs list to support the case where no non-dropdown pages can be shown, 
* added low-res media queries for the main chat window (both vertical and horizontal) which squeeze a bit more stuff into the window (things include making the time display floated right so there's more room for the messages, taking away unnessecary padding, and replacing the JabbR text with the jabbr 32px logo)
* simplified login and account pages (added a span6 to everything, removed now-unnecessary per-page styles) and added low-res media queries,
* made minor changes to the administration pages (things like text overflow in validation key on admin page, adding mobile initial scale meta for other pages)

![capture 28](https://f.cloud.github.com/assets/1271535/1461947/cce2d51e-44d8-11e3-9df5-e80e70438fc2.png)
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