Rewrote all kind of marks to fit marks specified in AC35 spec.

- added compound mark
- added corner
- rewrote mark as a single mark
- added rounding type enum

#story[828]

src/main/java/seng302/server/simulator/mark/CompoundMark.java

@@ -0,0 +1,57 @@
+package seng302.server.simulator.mark;
+
+public class CompoundMark {
+
+	private int markID;
+	private String name;
+
+	private Mark mark1;
+	private Mark mark2;
+
+	public CompoundMark(int markID, String name) {
+		this.markID = markID;
+		this.name = name;
+	}
+
+	public void addMark(int seqId, Mark mark) {
+		if (seqId == 1) {
+			setMark1(mark);
+		} else if (seqId == 2) {
+			setMark2(mark);
+		}
+	}
+
+	public int getMarkID() {
+		return markID;
+	}
+
+	public void setMarkID(int markID) {
+		this.markID = markID;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public Mark getMark1() {
+		return mark1;
+	}
+
+	public void setMark1(Mark mark1) {
+		this.mark1 = mark1;
+		mark1.setSeqID(1);
+	}
+
+	public Mark getMark2() {
+		return mark2;
+	}
+
+	public void setMark2(Mark mark2) {
+		this.mark2 = mark2;
+		mark2.setSeqID(2);
+	}
+}