Set margin of QC's uncollapsed title

Needed to add some additional MultiShrinkScroller code in order to support
interpolating between the maxiumun and minimum margin values. Previously, this
value was constant.

Also noticed I was pointlessly recalculating the minimum margin values.

Change-Id: I234a528517b91ea698eab0fc7996bbe9a8f1f404
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index 9d8ba70..c079a6b 100644
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -20,6 +20,8 @@
     <dimen name="quickcontact_starting_empty_height">150dp</dimen>
     <!-- Initial size of QuickContact's title size -->
     <dimen name="quickcontact_maximum_title_size">36dp</dimen>
+    <!-- When QC is uncollapsed, the title has this much margin on its left, right and bottom -->
+    <dimen name="quickcontact_title_initial_margin">16dp</dimen>
 
     <!-- Top padding of the entire contact editor  -->
     <dimen name="editor_padding_top">0dip</dimen>