MainWindow.java: began implementation of the external Oxide project.

Removed the internal Oxide package com.doetsch.dfscan.oxide
MainWindow.java, ProfileEditorWindow.java, ProgressWindow.java,
ResultsWindow.java: implemented external Oxide library calls, replaced
UI component instantiation with oxide component factory method calls.
ProfileEditorWindow.java: resided frame, implemented Oxide text field
and Oxide text area components encapsulating the name and description of
the profile.
Introduced and implemented FilterBuilderWindow.java.
MainWindow.java: changed the frame decoration close button behavior to
sotp the application when pressed.
Merge branch 'implement_external_oxide'