Create textbox control with markdown pre-parser

[marco-sacchi]

Make a sort of markdown pre-parser to automatically word-wrap the text and remove the limit of 38 characters per line on source .md files.

[marco-sacchi]

This can be merged with a uitextbox control with automatic word-wrap that displays simple text or markdown.

The uitextbox is a simple read-only content scrolling box supporting:

• scrolling one line up or down
• scrolling one page up or down
• jump to the beginning or end

To speedup the rendering the word-wrap must be done once on the pre-parsing phase.

[marco-sacchi]

To do:

• finish the implementation of the markdown parser
• create an intermediate format in order to do the parsing only once
• integrate the textbox with support for markdown rendering