[isaranga]

The bidi help page only covered the Java bidi demo, which is frozen at the Unicode 6.2 rules. It said nothing about bidi-c (bidic.jsp), the demo you need for current UBA behavior, including isolates and bracket pairs.

Changes to docs/help/bidi.md:

• New intro that explains the two demos and when to use each one.
• The existing bidi section now notes that it only supports the 6.2 rules and properties.
• New bidi-c section:
  • Input: the insert buttons, the 200 code point limit, the single-paragraph limit.
  • Options: Paragraph direction, UBA Version, Detail, Show vacuous rules.
  • Output: Resolved Levels, Reordered Display, Analysis.
  • Results URLs can be shared.

Change to UnicodeJsps/src/main/webapp/bidic.jsp:

• The help link pointed to help/breaks. It now points to help/bidi.

(This PR originally also derived the version text in bidic.jsp from UBAVersion. That change landed separately in #1604.)

• Approver: Feel free to merge on my behalf
  • rebase & merge one or more commits
  • squash & merge multiple commits into one

[CLAassistant]

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