Referral Contests 2 by Siropu 2.3.3

Since no bugs have been found since the Release Candidate, this is now released as stable.

This is the first release candidate and it contains a bug fix and some changes to the contests widget to display end date and links to view prizes and top referrers.

This release fixes various bugs and integrates with DBTech Credits add-on. The admin option "Referral Trophy Points" has been replaced with "Referral reward" which allows you to select the amount and the reward type.

Reward types are a new feature that allows you to create rewards in the form of trophy points and currencies for DBTech Credits, which can be used for contests prizes.

Note: Disable add-on before starting the upgrade process.

Added click count tracking for referral tools.
Added option to set the sender email address for invitation emails.
Added option to set the sender name for invitation emails.
Added option to set a predefined email subject.
Added option to set a predefined email message.

Fixed issue with incorrect referral tool links.