Clarify the "materialURL" tooltip that was a bit obscure.
New value:
"The URL to an external JSON file or "materialData". Append "?<materialName>" to select a single material if multiple are defined."
1- Update some tooltips (changed "Set the" for "The")
for Lines: 9, 18, 24, 215, 325, 329, 332, 335, 611
2- Include merge for conflict (not detected by Github) for "screenshare" attribute
3- Include tooltip for "renderWithZones" attribute (to avoid another rework on this file for PR#274) This includes some additional tooltip update done after PR215 for PR274 (no impact on functional)
Adding tooltips for 3 other missing properties:
- "alpha" of the "Image" Entity.
- "billboardMode" of the "Web" Entity.
- "showKeyboardFocusHighlight" of the "Web" Entity.
