Update new UI/UX for open document tree

Update new UI/UX design for open document tree
1. Implement confrim dialog when selecting target.
2. Update pick buttton text for user getting more info.

Bug: 117427611
Test: atest DocumentUITests
Change-Id: Ice2187df17e09754eff86d490c062e7dd41f34bd
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index 4c8b66a..2a3ab85 100644
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -71,7 +71,7 @@
     <dimen name="fastscroll_margin">0dp</dimen>
 
     <dimen name="bottom_bar_height">56dp</dimen>
-    <dimen name="bottom_bar_padding_end">10dp</dimen>
+    <dimen name="bottom_bar_padding">10dp</dimen>
     <dimen name="bottom_bar_button_height">36dip</dimen>
     <dimen name="bottom_bar_button_horizontal_padding">24dp</dimen>
     <dimen name="bottom_bar_button_corner_radius">4dp</dimen>