com.palm.app.email: align to changes to connectionmanager API

With the creation of the webos-connman-adapter the name of the getStatus method has
changed to getstatus. Any other component already uses the naming already.

This fixes the following bug:

2013-01-31T17:18:19.555389Z [1114] tuna user.notice WebAppMgr: {LunaSysMgrJS}:
com.palm.app.email: connectionmanager 'getStatus' request
failed.{"returnValue":false,"errorCode":-1,"errorText":"Unknown method \"getStatus\" for
category \"/\""}, file:///usr/palm/applications/com.palm.app.email/util/util.js:184

Open-webOS-DCO-1.0-Signed-off-by: Simon Busch <morphis@gravedo.de>