The "Help" buttons in the tikal filter editors don't work

Created by: nmihai_2000

Tikal has GUI dialogs that can be used to edit Parameters for various filters.

Some are just a simple edit box where you can change the “raw” (serialized) Parameters, but some have advanced dialogs, with lists, drop-down lists, radio and checkbox buttons, etc.

These dialogs have a “Help” button that does nothing.

How to reproduce:

• run tikal -e
• a dialog with a list of all supported filters is displayed
• select a filter in the list and click “View…”
  or simply double-click on the filter
• if the new dialog has a “Help” button (bottom-left), click it
• => nothing happens

Expected: a help page opens (corresponding to the filter being edited)

Complete list of filters that have a “Help” button:

• Haiku CatKeys
• IWSXLIFF
• Java Properties
• Java Properties (Output not escaped)
• JSON (JavaScript Object Notation)
• Markdown
• Microsoft Office Document
• MIF (beta)
• OpenDocument
• OpenOffice.org Documents
• Plain Text (all variants)
• PO (both “Monolingual” and “Standard”)
• Properties with complex HTML Content
• Regex Default
• SDLXLIFF
• Skype Language Files
• Spliced lines (all variants)
• SRT Sub-Titles
• Table (all variants)
• Text (“Block=Paragraph”, “Line=Paragraph”, and “Mac Strings“)
• TS
• XLIFF

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