Add vcr toolbar widget for ParaViewWeb

Change-Id: I3a690a9da45c56600c8a75916cb0c3173930d281
Adding vcr + viewport toolbar into ParaViewWeb

code refactoring + move css/js/png around + fix main web app

Change-Id: I959b41c277c6a2a35dafbd025955642b34c838eb
Fully support ParaViewWeb viewport toolbar widget

Change-Id: I0d79b6fe48f31af9545a2ea2186d036e2976edcc
Merge topic 'paraviewweb-widgets' into next

4c99fc8 Fully support ParaViewWeb viewport toolbar widget
e9b151c Adding vcr + viewport toolbar into ParaViewWeb
91e899b Add vcr toolbar widget for ParaViewWeb