Added atom feed module code from the svn. No changes done on top of this

Signed-off-by: Sateesh Kavuri <sateesh@mobilitas.co>
Modified the module to include adding the data in the DataPoint class
instead of creating the atom feed file. These changes cause the "Unknown
entity: DataPoint" error. Need to figure out the problem

Signed-off-by: Sateesh Kavuri <sateesh@mobilitas.co>