389: Add category to update site

* Removed lengthy old feature description
* Added Jan's website to the feature description
* Removed plugin.xml and splash.bml from product project because they
are not used.
* Set correct description of product manifest.

Author: wimjongman

it.baeyens.arduino.feature/feature.xml

@@ -76,11 +76,4 @@ If you do not agree with this policy, then please do not install this software.
          version="3.0.0.qualifier"
          unpack="false"/>
 
-   <plugin
-         id="it.baeyens.arduino.product"
-         download-size="0"
-         install-size="0"
-         version="3.0.0.qualifier"
-         unpack="false"/>
-
 </feature>

it.baeyens.arduino.product/META-INF/MANIFEST.MF

@@ -1,6 +1,6 @@
 Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
-Bundle-Name: Product
+Bundle-Name: Eclipse Arduino Project
 Bundle-SymbolicName: it.baeyens.arduino.product;singleton:=true
 Bundle-Version: 3.0.0.qualifier
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8

it.baeyens.arduino.product/plugin.xml

@@ -3,7 +3,7 @@
    <feature url="features/it.baeyens.arduino.feature_3.0.0.qualifier.jar" id="it.baeyens.arduino.feature" version="3.0.0.qualifier">
       <category name="Arduino"/>
    </feature>
-   <category-def name="Arduino" label="Arduino Eclipse Plugins">
+   <category-def name="Arduino" label="Arduino Eclipse Plugin">
       <description>
          Arduino development in the Eclipse IDE.
       </description>