New drawing app. for drawing interaction: add text tool, remove spray
brush, allow multiple interactions on the same question (runtime only),
based on frabric.js

Update Apache Tomcat to version 8.5.45, add a selenium test for the
metadata (general panel) in the question pool, add method to take
screenshots

review process with the last Chrome WebDriver

OO-3170: selenium test for reminder need a selectable license to save the details page of the course

OO-3028: interpret start end with exactly 8640000 seconds, start without hour, minute and second as "all day"

OO-2636: selenium test for roll call, from creation of a lecture block to the participant checking its absences

OO-2836: update to selenium 3.4, migrate the tests to pass with chrome, add css class mostly in wizards, remove some fieldset in fieldset, add some label around checkbox