Documentation: Update the documentation to reflect that fact that NxWidgets is now a part of apps/

Documentation/NXGraphicsSubsystem.html

@@ -397,8 +397,8 @@
 
 <p>
   <a href="NxWidgets.html">NxWidgets</a> is a higher level, C++, object-oriented library for object-oriented access to graphical &quot;widgets.&quot;
-  NxWidgets is provided as a separate package.
+  NxWidgets is provided as a separate library in the <code>apps/</code> repository
-  NxWidgets is built on top of the core NuttX graphics subsystem, but is not a part of the core graphics subystems.
+  NxWidgets is built on top of the core NuttX graphics subsystem, but is part of the application space rather than part of the core OS graphics subystems.
 </p>
 
 <h3>1.3.6 <a name="nxterm1">NX Terminal Driver (<code>NxTerm</code>)</a></h3>
@@ -3216,8 +3216,8 @@ int nxf_convert_32bpp(FAR uint32_t *dest, uint16_t height,
       This toolkit is built on top of NX and works with the multi-user NX front-end.
       See <code>include/nuttx/nx/nxtk.h</code>.
 
-    <dt><code>nuttx/../nxwidgets</code>
+    <dt><code>apps/graphics/NxWidgets</code>
-      <dd>The <a href="NxWidgets.html">NxWidgets</a> code is provided as a separate package located outside of the NuttX source tree (probably at this location).
+      <dd>The <a href="NxWidgets.html">NxWidgets</a> code is provided as a separate package provided in the <code>apps/</code> repository.
 
     <dt><code>graphics/nxterm</code>
       <dd>The NxTerm driver is built on top of NX and works with the multi-user NX front-end.

Documentation/NuttX.html

@@ -1468,13 +1468,6 @@
       The ChangeLog for the current release is at the bottom of that file.
     </p>
   </li></ul>
-  <li><b>NxWidgets</b>.
-    <ul><p>
-      Release notes for NxWidgets 1.13 are available <a href="https://bitbucket.org/nuttx/nxwidgets/downloads/">here</a>.
-      Release notes for all released versions on NxWidgets are available in the <a href="https://bitbucket.org/nuttx/nuttx/src/master/NxWidgets/ReleaseNotes.txt" target="_blank">BitBucket GIT</a>
-      The ChangeLog for all releases of NxWidgets is available at the bottom of the ChangeLog file that can viewed in the <a href="https://bitbucket.org/nuttx/nuttx/src/master/NxWidgets/ChangeLog.txt" target="_blank">Bitbucket GIT</a>.
-    </p>
-  </li></ul>
   <li><b>pascal</b>.
     <ul><p>
       Release notes for all released versions on pascal are available in the <a href="https://bitbucket.org/nuttx/pascal/ReleaseNotes" target="_blank">Bitbucket GIT</a>

Documentation/README.html

@@ -451,7 +451,13 @@ apps/
  |- nshlib/
  |   `- <a href="https://bitbucket.org/nuttx/apps/src/master/nshlib/README.txt" target="_blank"><b><i>README.txt</i></b></a>
  |- NxWidgets/
- |   `- <a href="https://bitbucket.org/nuttx/apps/src/master/NxWidgets/README.txt" target="_blank"><b><i>README.txt</i></b></a>
+ |   |- Doxygen
+ |   |   `- <a href="https://bitbucket.org/nuttx/apps/src/master/graphics/NxWidgets/Doxygen/README.txt" target="_blank"><b><i>README.txt</i></b></a>
+ |   |- tools
+ |   |   `- <a href="https://bitbucket.org/nuttx/apps/src/master/graphics/NxWidgets/tools/README.txt" target="_blank"><b><i>README.txt</i></b></a>
+ |   |- UnitTests
+ |   |   `- <a href="https://bitbucket.org/nuttx/apps/src/master/graphics/NxWidgets/UnitTests/README.txt" target="_blank"><b><i>README.txt</i></b></a>
+ |   `- <a href="https://bitbucket.org/nuttx/apps/src/master/graphics/NxWidgets/README.txt" target="_blank"><b><i>README.txt</i></b></a>
  |- system/
  |   |- <a href="https://bitbucket.org/nuttx/apps/src/master/system/cdcacm/README.txt" target="_blank"><b><i>cdcacm/README.txt</i></b></a>
  |   |- <a href="https://bitbucket.org/nuttx/apps/src/master/system/i2c/README.txt" target="_blank"><b><i>i2c/README.txt</i></b></a>
@@ -467,7 +473,6 @@ apps/
      |  `- <a href="https://bitbucket.org/nuttx/apps/src/master/wireless/bluetooth/btsak/README.txt" target="_blank"><b>btsak/README.txt</b></a>
      `- ieee802154
         `- <a href="https://bitbucket.org/nuttx/apps/src/master/wireless/ieee802154/i8sak/README.txt" target="_blank"><b>i8sak/README.txt</b></a>
-
 </pre></ul>
 
 <p>
@@ -475,15 +480,6 @@ apps/
 </p>
 
 <ul><pre>
-NxWidgets
- |- Doxygen
- |   `- <a href="https://bitbucket.org/nuttx/nxwidgets/src/master/Doxygen/README.txt" target="_blank"><b><i>README.txt</i></b></a>
- |- tools
- |   `- <a href="https://bitbucket.org/nuttx/nxwidgets/src/master/tools/README.txt" target="_blank"><b><i>README.txt</i></b></a>
- |- UnitTests
- |   `- <a href="https://bitbucket.org/nuttx/nxwidgets/src/master/UnitTests/README.txt" target="_blank"><b><i>README.txt</i></b></a>
- `- <a href="https://bitbucket.org/nuttx/nxwidgets/src/master/README.txt" target="_blank"><b><i>README.txt</i></b></a>
-
 buildroot/
  `- <a href="https://bitbucket.org/nuttx/buildroot/src/master/README.txt" target="_blank"><b><i>README.txt</i></b></a>