Collapsible menu(at dashboard page) - make the collapse animation faster

[xoRmalka]

          @xoRmalka @shootermv it's already merge, so feel pree to open issue or another PR if needed

Originally posted by @NoamGaash in #215 (comment)

[NoamGaash]

Hi @xoRmalka , thanks for opening this issue.
some ideas to make it easier for newcomers:

• add a screenshot
• describe the intended behaviour rather the observed one (i.e "make the collapse animation faster")
• add labels

good luck 🌠

[shootermv]

one thing i can assume as cause of slowness -
the resize of chart`s container which occurs when menu collapses -
makes the charts rerender multiple times (to adapt themselves to the width of container)

may be if we can handle the collapse animation start, and replace charts by skeletons during the collapsing animation - it will make the situation better?
so far is my idea

[xoRmalka]

I found a solution. I'm updating the PR. 🚀