Merge branch 'feature/project-expiration-page' into 'master'

add page Project expiration

See merge request !66

content/cloud/project-expiration/index.md

+---
+title: "Project Expiration Policy"
+date: 2021-06-18T11:22:35+02:00
+draft: false
+disableToC: true
+---
+
+Every group project has its expiration date. The date is set when creating the project. Expired project are to be disabled and its data later removed.
+
+When the project expires, we will contact its owner who can either extend project's expiration date or confirm its expiration. You have *two weeks* to respond to this e-mail. After *two weeks* the project will be disabled. After another *month* all resources including data will be removed permanently.