Tidy up 10-9-7 7-inch tablet layouts

* Slightly smaller key width and larger shift key and space key.
* Both left and right shift key has the same width.
* Move the 2nd-row slight right.

Bug: 6422448
Change-Id: If27028eaac20c503c352ba35dd156befc53918c7
diff --git a/java/res/xml-sw600dp/rows_qwertz.xml b/java/res/xml-sw600dp/rows_qwertz.xml
index de86444..abbc7db 100644
--- a/java/res/xml-sw600dp/rows_qwertz.xml
+++ b/java/res/xml-sw600dp/rows_qwertz.xml
@@ -24,7 +24,7 @@
     <include
         latin:keyboardLayout="@xml/key_styles_common" />
     <Row
-        latin:keyWidth="9.0%p"
+        latin:keyWidth="8.5%p"
     >
         <include
             latin:keyboardLayout="@xml/rowkeys_qwertz1"
@@ -34,28 +34,28 @@
             latin:keyWidth="fillBoth" />
     </Row>
     <Row
-        latin:keyWidth="9.0%p"
+        latin:keyWidth="8.5%p"
     >
         <include
             latin:keyboardLayout="@xml/rowkeys_qwerty2"
-            latin:keyXPos="4.5%p" />
+            latin:keyXPos="5.875%p" />
         <Key
             latin:keyStyle="enterKeyStyle"
             latin:keyWidth="fillBoth" />
     </Row>
     <Row
-        latin:keyWidth="9.0%p"
+        latin:keyWidth="8.5%p"
     >
         <Key
             latin:keyStyle="shiftKeyStyle"
-            latin:keyWidth="10.0%p" />
+            latin:keyWidth="11.75%p" />
         <include
             latin:keyboardLayout="@xml/rowkeys_qwertz3" />
         <include
             latin:keyboardLayout="@xml/keys_comma_period" />
         <Key
             latin:keyStyle="shiftKeyStyle"
-            latin:keyXPos="-9.0%p"
+            latin:keyXPos="-11.75%p"
             latin:keyWidth="fillRight" />
     </Row>
     <include