Coalesced changes from variosus sources..#4

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IJOL wants to merge 13 commits intoyunkaiwang:masterfrom

anodino-dev:master

Commits on Aug 9, 2018

Commits on Jun 1, 2019

Commits on Jun 14, 2020

Fix TypeError if there is only one meeting active
baxeico
authored

Commits on Jun 15, 2020

Merge pull request #7 from baxeico/patch-1
101t
authored

Commits on Aug 21, 2020

Add timeout of 10 seconds
bigbluemeeting
authored

Commits on Aug 22, 2020

Merge pull request #8 from bigbluemeeting/patch-1
101t
authored

Commits on Sep 4, 2020

fixed bugs:
kevinxdev
committed