Reduce "Connecting to Echotest" waiting time by 4 seconds

one of the most annoying things about breakout rooms is that the users have to do the echo test again. So they have to wait 7 to 12 seconds again (for most typical bbb configurations) just for the echo test to connect. This change reduces the iceCheckingTimeout from 5 seconds to 1 second, which is still way more than enough unless there is a configuration or network load issue. Depending on network of the used client, this change saves the user between 4 to 8 seconds for every time they activate audio playback or microphone.
The original 5 seconds timeout is not part of the official sip.js library but instead was added in #2877

add support for upload of '.jpeg' files (not just '.jpg')

Whiteboard performance improvements

Use HTTPS URLs in `README.md`

Fix Markdown links in `DEVELOPMENT.md`

Improve current presentation toast

Improve layout of notification options

Fix chat opening after saving application settings

adds shared notes single user test

Webcams test fixes

adds popup notifications test spec (not considering errors notifications)

adds required test variables to .env-template with empty values

Fix presenter indicator problem in Safari / Opera 

Add BBB version to html5 issue template

Co-Authored-By: Anton Georgiev <antobinary@users.noreply.github.com>

This would be useful for get a notion from wich version it comes happening and which changes can causes the possible bugs.