Groupboxes for Options window.

- "Search Behavior"
This has groupboxes for "When to search" (Search on Enter or Search when typing) and "How to search" (Beginning of text entry or Anywhere in text entry; see #1)
- "View + Formatting"
Has groupboxes for both UI stuff (the "View" groupbox) and output text formatting (see #4)
- "Entity File Location + Updates"
Contains a groupbox for updating the entity/character code XML file (the groupbox in the Options window now) as well as one to choose to use a built-in (`My.Resources`) one, one next to the program, one updated from the Internet, or one from another folder (see #2 and #3).

Comece revisando a janela de opções existente e os requisitos relacionados nas issues #1, #2, #3 e #4. O trabalho estará concluído quando as caixas de grupo especificadas Search Behavior, View + Formatting e Entity File Location + Updates estiverem representadas na janela de opções.

Escrita pelo modelo de indexação a partir do texto da issue.