reorganize packages, start converting overall app to react (very broken at the moment)

Packages/ohif-viewerbase/client/components/themeSelectorModal/themeSelectorModal.html

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+<template name="themeSelectorModal">
+    {{#dialogForm (extend this
+        id='themeSelectorModal' dialogClass='themed modal-lg' confirmLabel='Apply theme'
+        title='Themes' titleIcon='fa fa-sliders'
+    )}}
+        <ul class="theme-list text-center">
+            {{#each theme in themes}}
+                <li class="text-center preview-theme {{printClassIfSelected theme}}" data-theme="{{theme}}">
+                    <div class="icon-wrapper">
+                        <span class="theme-icon-{{theme}}"></span>
+                    </div>
+                    <h4 class="theme-title">{{ucFirst theme}}</h4>
+                </li>
+            {{/each}}
+        </ul>
+    {{/dialogForm}}
+</template>