Fixed typo in Readme.md

Security: keep the Rails secret token out of version control.

Store the secret token in a .gitignored file called ".secret", which is
created by the initializer if it doesn't exist.

Fixed 22th -> 22nd

Fix cancel button link on edit files page

changed Gitlab to GitLab in user facing locations

Fix small typo in install docs, Closes #3723

Typo fixes in cleanup.md

Typo fix in database.md closes 3984

Fixed grammatical error.

Issues bulk update