* refactor most of the components to outside of their Session folder
* finish moving overlay and memberListItem to react hook
* fix bug with kicked member len >2 not being displayed
also sort admins first in UpdateGroupMembers dialog
* fix admin leaving text of groupNotification
* add a useFocusMount hook to focus input fields on mount
* make click avatar convo item open only user dialog
* cleanup config default.json
* make sure to use convoController to build sync message
* disable showing pubkey on opengroups
* add a pause on audio playback
Fixes#2079
Biggest changes forced by this: alt tags for all images, resulting in
new strings added to messages.json, and a new i18n paramter/prop added
in a plot of places.
Another change of note is that there are two new tslint.json files under
ts/test and ts/styleguide to relax our rules a bit there. This required
a change to our package.json script, as manually specifying the config
file there made it ignore our tslint.json files in subdirectories
