added week calculations, refactor mocks

dmapp/dmcore/__init__.py

@@ -0,0 +1,14 @@
+class ActiveDesktop:
+
+	def __init__(self, desktops, unlabeled = "Other"):
+		self.desktops = desktops
+
+
+	def active_workspace():
+
+	    workspaces = subprocess.check_output(["wmctrl", "-d"]) \
+	                           .decode("utf-8").strip("\n").split("\n")
+
+	    for workspace in workspaces:
+	        if workspace[3] == "*":
+	            return int(workspace[0])