Draw phone/number keyboard layout witout icon

This change introduces:

* New KeyboardView attribute
  * keyLargeLetterRatio to specify large letter text size.
  * keyHintLabelRatio to specify hint label text size.
  * keyHintLabelColor to specify hint label text color.
  * keyPreviewTextRatio to specify key preview text size.
* New Key.keyLabelOption flags
  * alignLeftOfCenter, align the key label slightly left of the key center.
  * largeLetter, use keyLargeLetterRatio to draw key letter.
  * hasHintLabel, draw keyHintLabel at the right of key letter.
  * followKeyHintLabelRatio, draw the key label following keyHintLabelRatio size.
* Renames
  * Key.keyHintLetter to keyHintLabel.
  * Key.keylLabelOption fontFixedWidth to fontMonoSpace.
  * Key.keylLabelOption popupHint to hasPopupHint.
* Removes
  * number icon releted attributes and declarations.

Change-Id: I2f456737e3a46209e5f48b5155951b2b21a33859
diff --git a/java/res/xml-sw768dp/kbd_phone.xml b/java/res/xml-sw768dp/kbd_phone.xml
index 6801ac5..0935992 100644
--- a/java/res/xml-sw768dp/kbd_phone.xml
+++ b/java/res/xml-sw768dp/kbd_phone.xml
@@ -35,12 +35,12 @@
             latin:keyEdgeFlags="left" />
         <Key
             latin:keyLabel="-"
-            latin:keyStyle="numLabelStyle"
+            latin:keyStyle="numKeyStyle"
             latin:keyXPos="20.400%p"
             latin:keyWidth="8.047%p" />
         <Key
             latin:keyLabel="+"
-            latin:keyStyle="numLabelStyle"
+            latin:keyStyle="numKeyStyle"
             latin:keyWidth="8.047%p" />
         <Key
             latin:keyStyle="num1KeyStyle"
@@ -62,12 +62,12 @@
             latin:keyEdgeFlags="left" />
         <Key
             latin:keyLabel=","
-            latin:keyStyle="numLabelStyle"
+            latin:keyStyle="numKeyStyle"
             latin:keyXPos="20.400%p"
             latin:keyWidth="8.047%p" />
         <Key
             latin:keyLabel="."
-            latin:keyStyle="numLabelStyle"
+            latin:keyStyle="numKeyStyle"
             latin:keyWidth="8.047%p" />
         <Key
             latin:keyStyle="num4KeyStyle"
@@ -87,12 +87,12 @@
              the touch event on the area, "(" is intentionally not marked as a left edge key. -->
         <Key
             latin:keyLabel="("
-            latin:keyStyle="numLabelStyle"
+            latin:keyStyle="numKeyStyle"
             latin:keyXPos="20.400%p"
             latin:keyWidth="8.047%p" />
         <Key
             latin:keyLabel=")"
-            latin:keyStyle="numLabelStyle"
+            latin:keyStyle="numKeyStyle"
             latin:keyWidth="8.047%p" />
         <Key
             latin:keyStyle="num7KeyStyle"
@@ -124,7 +124,7 @@
             latin:keyStyle="num0KeyStyle" />
         <Key
             latin:keyLabel="#"
-            latin:keyStyle="numLabelStyle" />
+            latin:keyStyle="numKeyStyle" />
         <switch>
             <case
                 latin:voiceKeyEnabled="true"