Move ohif:hotkeys into ohif:core

Packages/ohif-core/client/components/hotkeys/confirmReplacementPopover.html

@@ -0,0 +1,6 @@
+<template name="hotkeysConfirmReplacementPopover">
+    {{#popoverForm (extend this confirmLabel='Yes' cancelLabel='No' confirmClass='btn-danger')}}
+        <p><b>{{this.conflictedFunctionName}}</b> is already using the <b>{{this.hotkeyCombination}}</b> shortcut.</p>
+        <p>Do you want to use the shortcut for the <b>{{this.newFunctionName}}</b> function instead?</p>
+    {{/popoverForm}}
+</template>