Merge pull request #7 from berni2288/pullrequest-bugfixes

Bugfixes for chat commands, item categories not shown, buying items
store-core, store-refund: add hide_menu_descriptions configs to hide menu descriptions (hl2:dm); store-shop: honour g_hideCategoryDescriptions in GetItemsCallback
wrong var
Merge pull request #8 from foobarhl/development

Hide Menu descriptions in store-core, store-refund.  store-shop update for hiding descriptions