Rapid-router

Bug Fixes

- Fix issue with deleted students appearing
([1256](https://github.com/ocadotechnology/rapid-router/pull/1256),
[`38fc3ca`](https://github.com/ocadotechnology/rapid-router/commit/38fc3ca914de80d2ab098deaac288906985f0335))

* fix: fix issue with deleted students appearing

Bug Fixes

- Remove sticky subnav from RR ([1254](https://github.com/ocadotechnology/rapid-router/pull/1254),
[`37668df`](https://github.com/ocadotechnology/rapid-router/commit/37668dfdad10288ca888f2dcb0615e689164e6e5))

* fix: remove sticky subnav from RR

* remove unneeded script

Features

- Rr level selection update ([1252](https://github.com/ocadotechnology/rapid-router/pull/1252),
[`1d31684`](https://github.com/ocadotechnology/rapid-router/commit/1d3168452819858e07629efe657a65d4c1420a73))

* feat: update level selection page

* cache fix

* python 3.6 to 3.7

* fix test

* fixes and tidy up

Features

- Remove ocado logo from the game
([1242](https://github.com/ocadotechnology/rapid-router/pull/1242),
[`a930fd0`](https://github.com/ocadotechnology/rapid-router/commit/a930fd04617cdf30af5249b1e5b29b7307df911d))

* feat: remove ocado logo from the game

Bug Fixes

- Add attempt creation test util
([1241](https://github.com/ocadotechnology/rapid-router/pull/1241),
[`60573ea`](https://github.com/ocadotechnology/rapid-router/commit/60573eaa04898b893155d9dd44aa1459acd142b8))

* fix: Add attempt creation test util

* Add test files to codecov ignore list

* Fix codecov.yml

Features

- Update level help texts ([1240](https://github.com/ocadotechnology/rapid-router/pull/1240),
[`d2610cc`](https://github.com/ocadotechnology/rapid-router/commit/d2610cc4540e5ded8473ef352f0a4b210223f049))

* feat: Update most help texts

* Update a few of the Python levels help texts

* Black formatter

* Remove all localisation from messages file and fix tests

* Remove obsolete tests

* Delete test locale directory

* Remove + signs and use f string