Fixing javadoc warnings, provided missing package javadocs and corrected group structure.

Change-Id: I2637afe49b81e8e6d10ef3bb0f2a1cf50b2564cc
diff --git a/web/api/src/main/java/org/onosproject/rest/resources/NetworkConfigWebResource.java b/web/api/src/main/java/org/onosproject/rest/resources/NetworkConfigWebResource.java
index 7837fca..2dc778ba 100644
--- a/web/api/src/main/java/org/onosproject/rest/resources/NetworkConfigWebResource.java
+++ b/web/api/src/main/java/org/onosproject/rest/resources/NetworkConfigWebResource.java
@@ -129,7 +129,7 @@
      * Uploads network configuration in bulk.
      *
      * @param request network configuration JSON rooted at the top node
-     * @throws IOException
+     * @throws IOException if unable to parse the request
      * @return empty response
      */
     @POST
@@ -150,7 +150,7 @@
      * @param subjectKey subject class key
      * @param request    network configuration JSON rooted at the top node
      * @return empty response
-     * @throws IOException
+     * @throws IOException if unable to parse the request
      */
     @POST
     @Path("{subjectKey}")
@@ -171,7 +171,7 @@
      * @param subject    subject key
      * @param request    network configuration JSON rooted at the top node
      * @return empty response
-     * @throws IOException
+     * @throws IOException if unable to parse the request
      */
     @POST
     @Path("{subjectKey}/{subject}")
@@ -197,7 +197,7 @@
      * @param configKey  configuration class key
      * @param request    network configuration JSON rooted at the top node
      * @return empty response
-     * @throws IOException
+     * @throws IOException if unable to parse the request
      */
     @POST
     @Path("{subjectKey}/{subject}/{configKey}")