GenericEditors now check their "selected" status before asking to be deleted.

The FilterViewport pauses for 50 ms after deleting a processor in order to
avoid double-deletions.

This reverts commit 307a5c3d.

Made UIComponent a MenuBarModel

Previously, if you placed a sink in front of a source, it would lead to
a never-ending "while" loop. By removing two lines (254-255), this problem
was solved.

In combination with an EventNode, a WiFiOutput node is able to send a
simple message to a hard-coded address via UDP. This is the first sink that
actually emits an output. It's obviously over-simplified, but as a
proof-of-concept, it seems to be working well.

Added a header-file and a cpp file from
http://cs.baylor.edu/~donahoo/practical/CSockets/practical/

Methods from these classes are currently being used to control the output
of the WiFiOutput class.

The IntanThread was occasionally looking for data after acquisition was disabled,
which would trigger the SourceNode to attempt to manually disable callbacks.
The only negative effect of this was that if the user was currently viewing
a different signal chain, it would switch back to the Intan chain unexpectedly.
This is no longer the case, as the SourceNode checks to see whether or not
it received a proper disable signal from the ProcessorGraph before notifying
the UI that data may have been dropped.

Generic Editors colors now match the type of processor.
The FilterViewport layout has been changed to a simple outline.

- Added a FilterViewportButton class to the UIComponent file, which shows/hides
the FilterViewport whenever it's clicked
- Thus, the DataViewport can now fill up almost the entire window

Tabs now work reasonably well when right-justified.

Border is now a square (except for upper-right corner).