Note about how to properly set up composer namespaces for plugins.
correct typos
Update password column length in other languages, refs #1545
Added a comma
Added a comma
Improved wording
Merge pull request #1535 from dereuromark/master-plugin

Note about how to properly set up composer namespaces for plugins.
Update cache docs to match examples

The first part of the documentation sets short and long as caches, but in the example code longterm is used. Switch longterm to long.
Merge pull request #1566 from guywarner/patch-1

Update cache docs to match examples
Update email.rst

Updated the email configuration options to include helpers.
Merge pull request #1567 from davidyell/patch-5

Update email.rst