add LGTM bot

Tipsy tooltip

use simpler background fetcher and fetch incoming messages too

delay app start until the page has been fully loaded

inject prefilled data

replace Util::imagePath with OCP\IURLGenerator::imagePath

replace Util::linkToRoute with IUrlGenerator::linkToRoute

Fix requirejs for other locations than apps/

clean up travis file and fix PostgreSQL

attachment style fixes

Load accounts with index page

move js build files to 'build' dir

use session storage instead of local storage

Search rework

restore setup view state only on error

fix HTML link redirection