* upstream/master: (53 commits)
center modal title
HTML5 - removed unused imports, fixed variable names
Added a missing import
Updated icon sets to the latest
Moved the recording systemd scripts into the core directory
record-and-playback: Split rap-worker into separate workers per step.
cleanup
audio join - apply structure and style from designs
"Video Chat" Layout has a dark background, controls are and title are removed in this layout.
Delete unused layout event class and videconf view.
HTML5 - changed underscore to lodash
revert tabIndex change
add local folder
remove unused imports
move handleExitAudio to service
remove merge conflict
fix more linting issues
lint nav settings dropdown container
remove unused imports
change function name
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