FLUID-5205, FLUID-5216: Add some instructions the demo page; start to fix up panel styling
Merge remote-tracking branch 'anastasia/FLUID-5205' into FLUID-5205
Merge branch 'FLUID-5205' into FLUID-5220
FLUID-5220: Refactored to remove re-instantiation

Refactored so that components do not need to be re-instantiated afterRender. Instead the DomBinder is cleared. In subpanels invokers that use DOM elements will need to be dynamic, and listeners that use them will need to wait for the onDomBind event. Unit tests need to be updated still.