split Player Tiers table into entries for individual tiers

Changes Player Tiers table on Tavern page FROM this:
![screen shot 2014-08-02 at 8 13 49 am](https://cloud.githubusercontent.com/assets/1495809/3785723/298ea2d2-19c9-11e4-9a1e-732f827a05fa.png)

TO THIS:
![screen shot 2014-08-02 at 10 42 37 am](https://cloud.githubusercontent.com/assets/1495809/3786639/eb6cdb5c-19de-11e4-8e46-16c8efdc9f6c.png)

When expanded those sections look like this:
![screen shot 2014-08-02 at 10 44 32 am](https://cloud.githubusercontent.com/assets/1495809/3786644/00eb766e-19df-11e4-896d-9e6636ecf96a.png)
![screen shot 2014-08-02 at 10 44 43 am](https://cloud.githubusercontent.com/assets/1495809/3786645/00ec1b5a-19df-11e4-9e2f-e0aae997052b.png)
![screen shot 2014-08-02 at 10 44 50 am](https://cloud.githubusercontent.com/assets/1495809/3786646/00ef7a34-19df-11e4-89e3-2a5559a585d5.png)

@Lemoness, note the new text for Moderators in the image just above. Do you want changes? When the new Tiers are fully implemented, I will be proposing that the final two sentences be deleted (i.e., delete "Not all Tier 7 contributors are moderators. All current moderators are listed below the Tavern chat box.")


FYI, all the colours for the new tiers are already in HabitRPG/habitrpg/develop, as shown by the test of the chat function below (all my test users have profile names that indicate their levels). Therefore I believe this PR can be safely merged.
![screen shot 2014-08-02 at 10 43 25 am](https://cloud.githubusercontent.com/assets/1495809/3786653/58b53da8-19df-11e4-8a01-ba2303cb9fe7.png)

This PR also has a little code that partially implements the new numbering system for moderators and staff (Tiers 8 and 9) but that's still invisible to the users.