You should be asking these questions to someone that knows ALL of the details of your personal situation.
Generally speaking to sell a property (transfer the title), there cannot be any liens. IMHO you need to pay the HOA fees, they are an obligation.
Property taxes, same thing. Unpaid taxes are required to be paid at transfer of title. That means that the unpaid property taxes will need to be paid by the lender (another cost they will have to incur).
Good questions, ask the person helping you with the short sale. If you need to talk with someone and need a referral to a short sale expert, I can probably help you, just contact me via my profile.
You shoud discuss this with the agent or broker representing you in the transaction
As long as you own the property, you are responsible for teh payment of taxes and HOA fees. If you don't pay you property taxes, they woould be in default and after a specific number of years, the tax man can foreclose. Something simnilar with HOA dues, if you don't pay them, the hOA can file a lien against the property and at some point may be able to foreclose as well. In both cases, you are probubly looking at several years for a foreclosure action.
In a Short Sale (really a short payoff) the monies to clear any back taxes or HOA dues are paid out of the deal. In that case it would not be an out of pocket cost to you. It could be possible that you might have to pay something if the bank refuses because the net on the deal is too low. That does not happen very often, usually they either accept the deal or not.