Update perms
Merge branch 'master' of github.com:michael-cannon/Easy-Digital-Downloads
Plugin links for #1404 #1406
Lower case extensions
Pippin says "Add Ons"
Revert "Update perms"

This reverts commit 038742aea5348ea9b46db514106b5b9ad576a512.
Correct PHPUnit Tests Guide URL
Change requsts for #1432

* Add @param tag
* Update @return tag
* Remove closing PHP tag
Merge pull request #1432 from michael-cannon/1406

Plugin meta and action links