Start on a gerrit plugin as a sub-plugin of git.

- Add a gerrit window that shows a list of changes
  and buttons to display, apply or check out
  a change.
- Uses the new Qt 5 Json API or the utils/json
  classes for Qt 4.

Tested-by: Tobias Hunger <tobias.hunger@nokia.com>
Tested-by: Orgad Shaneh <orgads@gmail.com>

Change-Id: I14c6c2c2de8f95fb785752c7319be8638b386a1e
Reviewed-by: Eike Ziller <eike.ziller@nokia.com>
Reviewed-by: Tobias Hunger <tobias.hunger@nokia.com>

src/plugins/git/git.qbs

@@ -17,6 +17,7 @@ QtcPlugin {
     cpp.includePaths: [
         ".",
         "gitorious",
+        "gerrit",
         "..",
         "../../libs",
         buildDirectory
@@ -96,5 +97,20 @@ QtcPlugin {
         "gitorious/gitoriousrepositorywizardpage.h"
         ]
     }
+
+    Group {
+        files: [
+        "gerrit/gerritdialog.cpp",
+        "gerrit/gerritdialog.h",
+        "gerrit/gerritmodel.cpp",
+        "gerrit/gerritmodel.h",
+        "gerrit/gerritoptionspage.cpp",
+        "gerrit/gerritoptionspage.h",
+        "gerrit/gerritparameters.cpp",
+        "gerrit/gerritparameters.h",
+        "gerrit/gerritplugin.cpp",
+        "gerrit/gerritplugin.h"
+        ]
+    }
 }