Merge pull request +12062 from c9/preview-is-files

Rename 'preview' to 'files' in share dialog

package.json

@@ -67,7 +67,7 @@
         "c9.ide.language.javascript.tern": "#bf1072b11a",
         "c9.ide.language.javascript.infer": "#0561c69d67",
         "c9.ide.language.jsonalyzer": "#bf12af3d0a",
-        "c9.ide.collab": "#6a1d678a0c",
+        "c9.ide.collab": "#a1a13c5943",
         "c9.ide.local": "#ded0db8949",
         "c9.ide.find": "#e33fbaed2f",
         "c9.ide.find.infiles": "#f0149b05ff",