Added Plesk-Driver to Password-Plugin

This Driver allows to change Passwords via Plesk RPC-API
fixed typos and added section in README
Support password encryption using openssl extension (#1489989)
Use Net_LDAP3
Fix missing out on the correct sorting
Correct reference to old function get_dn()
Fix bug where last folder on the list wasn't displayed in folder manager
List all plugins which have been attempted to load (#1488871)
Modify is_framed() so it returns boolean value
Fix frame check and strange "parent is undefined" issue
Add fileuploaderror label, fixing not resolved error label of failed import uploads
Add option (disabled_actions) to disable UI elements/actions (#1489638)
Merge branch 'master' of github.com:roundcube/roundcubemail
Merge pull request #207 from kanarip/dev/net_ldap3

Merge Net_LDAP3
Do not log ldap bind passwords
Update changelog
Don't change alignment for regular labels with input and text
Fix invalid Content-Type header when send_format_flowed=false (#1489992)
Merge branch 'master' of github.com:roundcube/roundcubemail
Fix default vacation status (#1490019) - improve error message