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).

先檢視現有的選項視窗，以及 issues #1、#2、#3 和 #4 中的相關需求。當指定的 Search Behavior、View + Formatting 和 Entity File Location + Updates 群組框在選項視窗中呈現時，工作即完成。

由索引模型根據 Issue 內容生成。