Two factor authentication plugin using YubiKey

With this plugin you can use a YubiKey hardware token device (available from Yubico.com) for two-factor authentication in Joomla!. The OTP validation is performed against the YubiCloud servers.
SQL files for the YubiKey two factor auth plugin
Changed description of plg_twofactorauth_yubikey for greater clarity
Merge branch 'refs/heads/projects-master' into feature-twofactor-yubikey
Merge branch 'refs/heads/projects-master' into feature-twofactor-yubikey

Conflicts:
	administrator/components/com_admin/sql/updates/mysql/3.2.0.sql
	administrator/components/com_admin/sql/updates/postgresql/3.2.0.sql
Improved YubiKey handling

- Error message shown when you try to activate this feature but the OTP is invalid or doesn't validate against YubiCloud's servers
- Shuffle the list of YubiCloud servers, using a different, random one every time (helps spread out the load and improve the resilience of the implementation)
- Use a time based nonce instead of the form token to prevent YubiCloud responding with REPLAYED_OTP if the form token doesn't change between subsequent attempts
Update assets on upgrate
The YubiKey authentication would always return false
CS update
Merge pull request #96 from dbhurley/assetupdate

CS update
TinyMCE updated to version 4.0.8
Version in XML updated
# [#32346] Coding error in plugins/system/remember/remember.php
# [#32290] Login screen showing secret key field when it shouldnt, not showing remember me
# [#32338] Missing string
# [#32353] Fatal Error: Class PlgUserJoomla not found
# [#32352] Add class aliases for legacy application classes
# [#32326] Control Panel Icon Needs to Change
# [#32315] *regression: Notices or fatal errors for categories menu item display
# [#31139] Two functions in com_content article model need to use JDatabase