Fixing up PagedView to work in landscape mode

-> separated notion of page spacing and paged view padding
-> always position the current page within the rect
   created by pagedview's viewport + padding
-> space pages by a constant amount

Change-Id: I6bb35f72f04543f83b51ef981f8c9ded051623ac
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index dcddc09..d87fb14 100644
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -21,6 +21,7 @@
     <dimen name="dynamic_grid_search_bar_height">48dp</dimen>
     <dimen name="dynamic_grid_page_indicator_height">24dp</dimen>
     <dimen name="dynamic_grid_icon_drawable_padding">4dp</dimen>
+    <dimen name="dynamic_grid_workspace_page_spacing">8dp</dimen>
 
 <!-- Wallpaper picker -->
     <dimen name="wallpaperThumbnailWidth">106.5dp</dimen>
@@ -41,7 +42,6 @@
 <!-- Workspace -->
     <dimen name="workspace_max_gap">16dp</dimen>
     <dimen name="workspace_overscroll_drawable_padding">0dp</dimen>
-    <dimen name="workspace_spring_loaded_page_spacing">15dp</dimen>
     <dimen name="overview_panel_bottom_padding">50dp</dimen>
     <dimen name="overview_panel_buttonSpacing">60dp</dimen>
     <dimen name="overview_mode_page_offset">130dp</dimen>