... "Light" was used in two different meanings, but one place was the obsolete
Leveller effect, whose code is removed now. (I leave the files in place, to
make it easier for the curious to know it was once there, and find its history.)
i18n-hints added for the surviving use of "Light" to name a theme, and also for
some of the other themes.
Previously this was hard coded to use the online alphamanual.
Some other help-on-errors paths were hardcoded to use the online manual, and did not use local help even if available, so these were changed too.
Also two naming changes in the code:
ShowHelpDialog() became ShowHelp() because it typically shows the help in your browser, only showing the help in a dialog under certain circumstances.
The helpURL parameter became helpPage since it is usually a page name that is then elaborated into a url.
The Link() function became InnerLink().
Some careful http -> https changes made too.
Fixed by putting key bindings on the left in all three views.
I also elevated EXPERIMENTAL_KEY_VIEW to no longer experimental, by excising the old code which we don't need any more.
I've implemented three states for what to do if no selection:
0 - Grey out (no longer used)
1 - Auto-select
2 - Give the warning message and try again.
Add Alt+P and Alt+N Previous/Next Clip shortcuts
Shoorter naming of Default options. Now just 'Standard' and 'Full'.
No longer even attempt to remove (Option)+Command+M
We now don't sort the list until a view is selected. Also we create it with nodes open, rather than creating with nodes closed and then separately opening them. Instead of 3 sorts at initialisation only one happens now. AX info is only updated after a sort, so this may be 3x faster for screen reader users too.
This commit provides a different help landing page (Settings) for preferences that are used outside the normal Ctrl+P preferences dialog - for example, 'spectrum settings' accessed from the track menu. This should work for any settings that are used on their own in that way, though spectrum settings is currently the only example.
