Resolve WB-373: Add access to loaded file's path through Save/Manager Files Dialog by adding 'More' menu item that copies a file's path to the clipboard.

Moved the OSMesaDummy functions from GuiQt into their own, new module OSMesaDummy.  Having the dummy OSMesa functions in GuiQt did not work for linking on all systems.  As mentioned in a previous commit, the dummy OSMesa functions are needed to prevent OpenGL 'clashes' now the the 'wb_command -show-scene' command is used in Workbench as part of the Help System.

Additonal changes for Help Dialog: Add help for each 'wb_command' operation.  Use a Tree Widget (hierarchy) for the help topics.  Added deletion of CommandOperationManager to wb_view.  Had to create some 'dummy OSMesa' functions for linking to the GUI.  If the real OSMesa library was linked by the GUI, it totally screwed up the GUIs OpenGL.

don't call gz*64() functions on versions prior to 1.2.3.3

related things like a class for dealing with .gz files and raw files the same way

Added a browswer window selection combo box to clipping planes dialog so that user knows which window is being affected and also to prevent a crash if the selected clipping browser window is closed.

When a browser window is closed, any WuQDialogNonModal instances must be reparented.  A step that was missing was updating these WuQDialogNonModal instances so that they no longer reference a closed window and this step has been added.  This fixes a crash caused by the Custom View Dialog trying to access a browser window that had been closed.

Resolve WB-390: In Charting Map Indices Should Start with 1 not 0.  For data-series data displayed in a chart, the minimum X-value was zero but should be one so that it matches the map indices.  In addition, the axis label logic was changed so that values are displayed at the minimum and maximum edges of the axis (most of the time).

Accessing resources to find help pages in resources so that names of help pages do not need to be in the source code.