Set EditText cursor to text color for api 12-20

Closes #228

src/main/res/layout/control_set_description.xml

@@ -22,6 +22,7 @@
         android:orientation="vertical">
 
         <EditText
+            style="@style/edit_text_style"
             android:id="@+id/notes"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"

src/main/res/layout/control_set_title.xml

@@ -25,6 +25,7 @@
         android:src="@drawable/btn_check" />
 
     <EditText
+        style="@style/edit_text_style"
         android:id="@+id/title"
         android:cursorVisible="false"
         android:layout_width="0dp"

src/main/res/layout/task_edit_activity.xml

@@ -83,6 +83,7 @@
         <!-- Quick Add Task -->
 
         <EditText
+            style="@style/edit_text_style"
             android:id="@+id/commentField"
             android:layout_width="wrap_content"
             android:layout_height="39dip"

src/main/res/values-v12/styles.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="edit_text_style">
+        <item name="android:textCursorDrawable">@null</item>
+    </style>
+</resources>

src/main/res/values-v21/styles.xml

@@ -3,4 +3,8 @@
     <style name="AppThemeBase" parent="Theme.AppCompat.Light.NoActionBar">
         <item name="android:windowDrawsSystemBarBackgrounds">true</item>
     </style>
+
+    <style name="edit_text_style">
+    </style>
+
 </resources>

src/main/res/values/styles.xml

@@ -157,6 +157,9 @@
         <item name="android:textColor">?attr/asTextColor</item>    
     </style>
 
+    <style name="edit_text_style">
+    </style>
+
     <!--================================================== Custom Dialogs == -->
     
      <style name="DialogTitle">