bugfix in delete pipeline in ui, changed pipelines to be a list instead of a hashmap, ui renaming

- changed pipeline delete message to be Can not remove the only pipeline!
- duplicate pipeline window will display current pipeline on open
- duplicate windows button changed from discard to cancel

Main/src/main/java/com/chameleonvision/vision/camera/CameraManager.java

@@ -116,8 +116,9 @@ public class CameraManager {
 	}
 
 	public static void setCurrentPipeline(int pipelineNumber) throws CameraException {
-		if (!getCurrentCamera().getPipelines().containsKey(pipelineNumber))
+		if (pipelineNumber >= getCurrentCamera().getPipelines().size()){
 			throw new CameraException(CameraException.CameraExceptionType.BAD_PIPELINE);
+		}
 		getCurrentCamera().setCurrentPipelineIndex(pipelineNumber);
 		SettingsManager.updatePipelineSetting(pipelineNumber);
 	}