Added task list style elements.

Author: khaykov

aztec/src/main/res/values/attrs.xml

@@ -48,6 +48,8 @@
         <attr name="headingFourFontColor" format="reference|color" />
         <attr name="headingFiveFontColor" format="reference|color" />
         <attr name="headingSixFontColor" format="reference|color" />
+        <attr name="taskListStrikethroughChecked" format="reference|boolean" />
+        <attr name="taskListCheckedTextColor" format="reference|color" />
     </declare-styleable>
 
     <declare-styleable name="AztecToolbar">

aztec/src/main/res/values/styles.xml

@@ -49,6 +49,8 @@
         <item name="quoteWidth">@dimen/quote_width</item>
         <item name="textColor">@android:color/white</item>
         <item name="textColorHint">@android:color/darker_gray</item>
+        <item name="taskListCheckedTextColor">@android:color/darker_gray</item>
+        <item name="taskListStrikethroughChecked">true</item>
     </style>
 
     <style name="AztecToolbarStyle">