DRAW_UPDATE can happen when the synchronised update option is turned on. 
And we don't need the hacky arg drawEndOnly parameter anymore, as now it is judged more precisely in the same way as in updateAnnotationPencil.

Don't translate interim transcript  which is veery long and inaccurate.

remove name from caption text

add avatar before caption

Create user/container.jsx

Create user/component.jsx

get whosText and captionText from {data}

add requesterUserId as a variable to modifier/setTranscript. It will be used to set 'whosText" of Captions.

add whosText in Captions

Fix: type check

pass object captionData: { captionText: formatCaptionsText(data), whosText: caption.whosText }, instead of the string formatCaptionsText(data).

caption bg translucent

revert alpha channel from default font background

add alpha channel to all font background color

remove minHeight for correct 2-line limitation in #212

add align-items: 'flex-end'
remove background="#000000a0", which does not do the job anyway after removing the size definition of avatar

set gap between avatar and caption

Add toggling fullscreen mode by a mouse double click. Useful for a hybrid presentation.

Fixes a bug that the styles of quick link button and its dropdown would not be transmitted to the detached window.
I tried at first to inject the styles, but it was a lot, so decided to show (render) them even when no URLs are written in slides. 
"disabled = true" did not allow rendering the dropdown, so I need to put a dummy item to the dropdown list.

Makes the button unclickable.