dictextension dict

Tag the source code that was used to build and test Dict version 0.9.0.

Clarify instructions for executing the final test case.

Use native line endings to make it easier to edit with notepad on Windows.

Change some nomenclature in the test plan: defining a word -> looking up a word

Use native EOL to make it easier to edit in notepad.

Set the version to 0.9.0 for a formal release.

Use 6 instead of 8 when looking up HTML content on dict.bibleonline.ru.
This additionally tests the screen limit on the resize-window-to-content, as "6" has very wide content that is intented to wrap.

Limit the window size to the size of the screen.
This prevents very long definitions from being being rendered off-screen.
This was added because very long HTML content can be written that is intended to wrap to the size of the window and so sizing the window to fit the content is not appropriate.

Refactoring: move shared logic into createHtmlDefinition() to avoid code duplication

Fix a few copy&paste errors where a MIME header was added where it shouldn't have been.