Rearranged some modules, updated SIF and SSS

Some item scripts weren't actually items, but they were heavily
dependant on SIF, these have been moved to scripts/SIF/Modules as they
will definitely come in useful for people.

SIF/Container has been updated heavily with a better system of
displaying the player inventory, instead of creating it's own dialog it
simply shows the standard player inventory from SIF/Inventory but uses a
new function in that script that allows hooking into the main item list
dialog and placing new items in there, it's also context sensitive.

Also updated to the latest SA:MP test version, 0.3x. Updates will be
better once I put SIF in a separate repo. As well as SSS and SFFA (the
gamemodes)