Part of WB-413: Removed 'Volume ID' from Toolbar:Tab and moved selection to Volume Slice Indices/Coords Toolbutton that uses a crosshair/pointer icon.  During an identification operation the slices within a tab only move if volume ID is within the tab or from an volume ID in a yoked tab.
Add two new preferences as part of WB-413: (1) Default each tab's yoking to Group A, and (2), Default Volume Identification on for new tabs.
Do not override yoking and volume id when creating a new tab with File Menu->New Tab.
Added a method to convert a string to an HTML page with a specified font height.
Remove find in help page line edit and arrow forward/next buttons; Add 'Collapse All' and 'Expand All' buttons to help topics; rename Workbench to wb_view in help topics; use smaller font for wb_command item help text; order topics Glossary (collapsed), wb_command (collapsed), wb_view (expanded).
Updated help files
When Save/Manage Files Dialog is closed, save the status of View Files Types, View Structures, and View Files located in the dialog's toolbar.  Restore these selections when the dialog is reopened.
Add a preference for the Save/Manage Files 'View Files' toolbar selection.  This preference is used the first time the dialog is displayed and from then on, the previous selection is used for the default until wb_view is restarted.
Added new menu item 'File Menu->Duplicate Tab' that creates a new tab that duplicates the content of the current tab (previous function of 'File Menu->New Tab'.  Changed 'File Menu->New Tab' so that it creates a new tab but does NOT duplicate content of selected tab and also applies preferences for 'yoking to group A' and 'volume identification'.