Fix preset selection warning when user loads a graph.

When a user loads a preset, Foreman would look for matching presets but
fail to find a match because it did not load in the `water_resources`
which resulted in it failing to notice things like water.

We now do this by concatenating it onto the `resources` enumerable.

Fixes #108

Author: Olipro

Foreman/DataCache/PresetProcessor.cs

@@ -251,7 +251,7 @@ private static async Task<PresetErrorPackage> TestPresetStreamlined(Preset prese
 			}
 
 			//have to process mining, generators and boilers (since we convert them to recipes as well)
-			foreach (var objJToken in jsonData["resources"])
+			foreach (var objJToken in jsonData["resources"].Concat(jsonData["water_resources"]))
 			{
 				if (objJToken["products"].Count() == 0)
 					continue;