Added player hunter ship
Merge branch 'development' of https://github.com/doctorspoof/SpaceShooter into development
Fixed scene hopefully
Fixed frigates turrets still firing whilst ship is in death sequence. Also fixed enemies error when target has died.
Made player use strafe modifier for moving backwards. Stopped main thrusters from being fired if no forward movement
Returned player to original state
Added all enemies spawning at once with placeholder texture
Added wormholes and stuff for spawning enemies
Deleted some unused prefabs/renamed them
Added new GUI assets to dev branch
Current stage of NetworkInventory system

Still a work in progress, temporary save whilst we play test.
Beta implementation of NetworkInventory

Needs severe debugging and implementation into the shops and capital
ship.
Stage one of GUIManager fix

Copied the previous version, still need to update the shop interface.
Updated NetworkInventory to support replacement

Items can now replace those which exist in the inventory without prior
removal. Item additions also now require a ticket to be presented.
Cleaned up ShotScript, still needs updating

It still doesn't interact with the NetworkInventory system yet.
Fixed some NetworkInventory issues

Tickets also expire on the clients side now.
Added extra error checking to ItemIDHolder

Will now check if Item objects have a null reference to their
itemObject GameObject.
Cleaned up LootTableScript

Got rid of excess code and unserialised m_itemList.
Start of NetworkInventory integration with shops

Currently they can only reset their inventory, GUI-based player
integration needs to be performed.
Final additions before merging.