Release 1.0-beta8

[phpfreechat]

This release adds sound notifications, new /invite command, a new mysql container, and new translations (Esperanto, Romanian, Armenian, Bangla). Some small optimisations were done on the file container (wait for the next release for stronger optimizations). It also fixes some bugs : directories with 777 rights were not browsable on special servers (755 rights is better), and the chat was broken on special windows servers.