* Added support for OAuth2 authentication (since the Mendeley API no longer supports OAuth1)
* Support for OAuth1 remains in rudimentary form (if you already have authorized the plugin, you can continue to use it)


git-svn-id: https://plugins.svn.wordpress.org/mendeleyplugin/trunk@857321 b8457f37-d9ea-0310-8a92-e5e31aec5664
* bugfix regarding loading of csl files


git-svn-id: https://plugins.svn.wordpress.org/mendeleyplugin/trunk@858361 b8457f37-d9ea-0310-8a92-e5e31aec5664
* bugfix regarding CSL formatting


git-svn-id: https://plugins.svn.wordpress.org/mendeleyplugin/trunk@860012 b8457f37-d9ea-0310-8a92-e5e31aec5664
* bugfix concerning escape characters in OAuth2 client secrets (added stripslashes())
* added	possibility to remove/delete OAuth2 access token


git-svn-id: https://plugins.svn.wordpress.org/mendeleyplugin/trunk@860153 b8457f37-d9ea-0310-8a92-e5e31aec5664