Create a new standalone info pane widget

This currently doesn't support the following options:

* protocol icons
* emblems like mobile, etc
* buddy status's
* editing topics

There is also an issue where the avatar will cause it to grow larger than an
infopane without an avatar.

Testing Done:
Ran locally, verified it works are currently intended with chats, buddies, and non-buddies.

Reviewed at https://reviews.imfreedom.org/r/614/