feat(user preferences) Add User Preferences & Theming to Standalone Viewer (closes #117). Update Standalone to Meteor 1.7

Packages/ohif-themes-common/client/components/themeSelectorModal/themeSelectorModal.html

@@ -1,6 +1,6 @@
 <template name="themeSelectorModal">
     {{#dialogForm (extend this
-        id='themeSelectorModal' dialogClass='modal-lg' confirmLabel='Apply theme'
+        id='themeSelectorModal' dialogClass='themed modal-lg' confirmLabel='Apply theme'
         title='Themes' titleIcon='fa fa-sliders'
     )}}
         <ul class="theme-list text-center">