Improve Composite Symbolization dialog

[jng]

• Move the inline Symbol Definition editor out to a separate dialog window
• Show the Symbol Name in addition to the Symbol Component type
• Add pre-defined inline symbol components that can be added to the symbol components list
  • Solid Fill
  • Solid Line
  • Point
  • Point Text Label
  • Line Text Label
  • Polygon Text Label
• Move the parameter override property grid to between the component list and the preview image
• Update the parameter override property grid to
  • Show the display name of any symbol parameter override
  • Add a toolbar button that can show the full parameter definition for a selected parameter override

[jng]

Fixed r8148