added symbols and labels

added makeLabel() to return a string for the host, in order: name, address, uuid
added reorder sypport
added movehost() to reorder
added symbolpreview view to easilty show the symbol and label
added symbol with sf, iscustom, offset vars to help
added a picker to choose the symbol

Resources/Assets.xcassets/custom.pc.symbolset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  },
+  "symbols" : [
+    {
+      "filename" : "custom.pc.svg",
+      "idiom" : "universal"
+    }
+  ]
+}