Some changes on the testing branch

Some changes on the test branch:

Changes to procedure maps:
• The Scientist Outpost will no longer spawn in the Winter Biome.
• Radiation has been removed from substations near roads.
• Slot machines (aka "one-armed bandits") will be added in the amount of three pieces in the bandit camp.

Server browser changes:
• Server browser no longer finds empty servers (only by default - this can be turned back on in filters)
• Searching for empty servers now sends a new request to Steam. Previously, the search was performed on the original response from the Steam Server Browser, without generating a new one.
• The "favorites" and "history" tabs will always show empty servers.
• Minor visual improvements to server tags

These changes should improve the server browser experience by excluding empty servers from the search. As the game grew in popularity, a problem arose whereby the browser could not find more than 5,000 servers. This affected some servers that could not be found even through search if they fell outside the aforementioned number. The developers also have plans for relatively large changes to the interface.