Items that were already installed should not be reinstalled (compare state)

Conflicts:
	plugins/c9.ide.installer/gui.js

package.json

@@ -60,7 +60,7 @@
         "c9.ide.language.javascript.tern": "#7aab8b0b6a",
         "c9.ide.language.javascript.infer": "#393d215e96",
         "c9.ide.language.jsonalyzer": "#21b64e5820",
-        "c9.ide.collab": "#7b09419b5c",
+        "c9.ide.collab": "#e446654bc3",
         "c9.ide.local": "#cf624506cc",
         "c9.ide.find": "#12ec533318",
         "c9.ide.find.infiles": "#72582de3cd",
@@ -83,7 +83,7 @@
         "c9.ide.help.support": "#60e88f5680",
         "c9.ide.imgeditor": "#08bbc53578",
         "c9.ide.immediate": "#6845a93705",
-        "c9.ide.installer": "#2992b068bc",
+        "c9.ide.installer": "#0571b1d5f9",
         "c9.ide.mount": "#cb45b621f1",
         "c9.ide.navigate": "#64156c7f4a",
         "c9.ide.newresource": "#f1f0624768",