pre-release19

• Is1273/groups api (#1276)
• Hints + Pogressbars + Favicon + Buttons visibility + filters (#1287)
• Is1289/mail environs (#1291)
• [bug] Fixes database blockage upon many requests on projects interface (#1301)
• Increase timeout for test (#1299)
• Revert "webserver does not respond when many logs are coming in from rabbitMQ (#1293)" (#1297)
• Appends more information in e2e's test screenshots (#1294, #1295, #1296)
• webserver does not respond when many logs are coming in from rabbitMQ (#1293)
• Is1233/auto update postgres (#1290)