ReleasePlan/5.3

Detailed schedule for the 5.3 release. The page mentions weeks instead of exact dates, please read explanation on the overall release plan page.

5.3.6 release
5.3.6 is an initially unscheduled release with shortened cycle (only a single RC), due to a wrongly placed tag that made some translations unavailable in 5.3.5

5.3.7 release
Notes: rc2 was initially scheduled for week 42