[release] Show subscriptions

Hello

This is simple extension, which let moderators to see who subscribed a topic.

List is displayed in topic footer. I created new div for this, and I'm sharing this solution between 4 extensions:
-Favorite topic (check for new version)
-Hide topic (check for new version)
-Lock topic
-Show subscriptions
It mean that there is only one div (frame) created for all of them. Of course is working separately as well.

Version 1.0
show_subscriptions_1.0.zip