Added Pet css sprite and removed genders from player css sprites

Added one sprites containing all of @Shaners' pets.

Fused male and female back together to 1 spritesheet again. Genders were removed although the same appearance should be obtainable with the new system!
Add inventory tab
Enable drops at level 4
Merge branch 'pet+player_css' of github.com:Pandoro/habitrpg into inventory
add . to player / pet sprite classes
wip
Working... in progress
gut old pet images, now we're using sprites. begin on new items.pets[] structure
Show meats in inventory
Drop an egg when the user htis level 4
Add comments to helper function
Merge branch 'inventory' of github.com:switz/habitrpg into switz-inventory

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renaming some pets for consistency, adding foods
get the pets working for the avatar box, with consistent names (need
to manually apply with model.set for now)
Add eggs and rename to food
Merge branch 'inventory' of github.com:switz/habitrpg into inventory
Add food drop and avatar stable
Save eggs as object so we can grab text easily
Merge branch 'develop' of github.com:lefnire/habitrpg into inventory
1% chance on every score to get an item