- add possibility to allow execution of the button's routine besides triggering
`toolbarButtonClicked` API event
- keep backwards compatibility
- get rid of `ToolbarButton`

* feat(toolbox) allow any toolbox button to be displayed as main

fixes the previous behaviour where only a certain set of buttons were whitelisted for being displayed in the main toolbar

* code review

* code review - fix avatar icon position

index.js of local recording

local-recording(ui): recording button

local-recording(encoding): flac support with libflac.js

Fixes in RecordingController; integration with UI

local-recording(controller): coordinate recording on different clients

local-recording(controller): allow recording on remote participants

local-recording(controller): global singleton

local-recording(controller): use middleware to init LocalRecording

cleanup and documentation in RecordingController

local-recording(refactor): "Delegate" -> "Adapter"

code style

stop eslint and flow from complaining

temp save: client status

fix linter issues

fix some docs; remove global LocalRecording instance

use node.js packaging for libflac.js; remove vendor/ folder

code style: flacEncodeWorker.js

use moment.js to do time diff

remove the use of console.log

code style: flac related files

remove excessive empty lines; and more docs

remove the use of clockTick for UI updates

initalize flacEncodeWorker properly, to avoid premature audio data transmission

move the realization of recordingController events
from LocalRecordingButton to middleware

i18n strings

minor markup changes in LocalRecordingInfoDialog

fix documentation