Improve the image editor.

A variety of improvements to the image editor, such as:

- New, fullscreen styling
- Smoother lines
- Better text and sticker handling
- Improved color picker with a history pallette
- New highlighter tool

res/values/arrays.xml

@@ -273,11 +273,15 @@
     </integer-array>
 
     <array name="scribble_colors">
-        <item>#000000</item>
+        <item>#ffffff</item>
         <item>#ff0000</item>
-        <item>#ffff00</item>
-        <item>#00ffff</item>
         <item>#ff00ff</item>
+        <item>#0000ff</item>
+        <item>#00ffff</item>
+        <item>#00ff00</item>
+        <item>#ffff00</item>
+        <item>#ff5500</item>
+        <item>#000000</item>
     </array>
 
     <string-array name="pref_message_font_size_entries">

res/values/colors.xml

@@ -54,7 +54,7 @@
     <color name="import_export_touch_highlight_light">#400099cc</color>
     <color name="import_export_touch_highlight_dark">#40ffffff</color>
 
-    <color name="sticker_selected_color">#8cf437</color>
+    <color name="sticker_selected_color">#99ffffff</color>
     <color name="transparent">#00FFFFFF</color>
 
     <color name="MediaOverview_Media_selected_overlay">#88000000</color>

res/values/dimens.xml

@@ -58,7 +58,7 @@
     <dimen name="onboarding_title_size">34sp</dimen>
     <dimen name="onboarding_subtitle_size">20sp</dimen>
 
-    <dimen name="scribble_stroke_size">3dp</dimen>
+    <dimen name="scribble_stroke_size">2dp</dimen>
 
     <dimen name="floating_action_button_margin">16dp</dimen>
 

res/values/themes.xml

@@ -373,4 +373,7 @@
         <item name="android:windowBackground">@drawable/permission_rationale_dialog_corners</item>
     </style>
 
+    <style name="TextSecure.ScribbleTheme" parent="TextSecure.DarkNoActionBar">
+    </style>
+
 </resources>