Refine application title and category in app.xml and pom.xml

- Remove ONOS keyword from application title
- Capitalize each keyword in application title
- Make it consistent to use App, Provider and Driver in
  application title
- Add right category name for each application
- Add missing application title and category
- Make application category comment more descriptive

Change-Id: Ib886b4a4293c38bd546a4107b20569f1bd7031a7
diff --git a/apps/pathpainter/pom.xml b/apps/pathpainter/pom.xml
index 053bbed..57457f0 100644
--- a/apps/pathpainter/pom.xml
+++ b/apps/pathpainter/pom.xml
@@ -34,9 +34,8 @@
     <properties>
         <onos.app.name>org.onosproject.pathpainter</onos.app.name>
         <onos.app.title>Path Visualization App</onos.app.title>
-        <onos.app.category>default</onos.app.category>
+        <onos.app.category>Utility</onos.app.category>
         <onos.app.url>https://wiki.onosproject.org/display/ONOS/Path+Painter+Application+GUI</onos.app.url>
-        <onos.app.title>Path visualization application</onos.app.title>
         <onos.app.readme>
             Allows the user to visualize different types of paths between
             network entities such as switches and hosts.