Add a namespace fix to get 1.6 soap request through

[lahnaoja]

Small changes to get an Ocpp1.6 soap request through, main fix is done to get the namespace interpreted:

• Using getTextContent() in SOAPSyncHelper to get the "From" Address soap header as well
• Xml schema annotation (package-info) fixed to include namespace prefix "ns"
• WebServiceListener fixed to add "toUrl" in SessionInformation. This holds soap server address of the pole
• Ignored Idea editor files that aren't needed in vcs for a maven project

[TVolden]

Looks good, but a unit test is failing.

[TVolden]

There is a null pointer exception in one of the unit tests, here is the output from the CI log:

unpackPayload_bootNotificationCallResultPayload_returnBootNotificationConfirmation(eu.chargetime.ocpp.test.SOAPCommunicatorTest)  Time elapsed: 0.364 sec  <<< ERROR!

[coveralls]

Coverage remained the same at 56.988% when pulling ab5aa33 on lahnaoja:develop into 26bdd8e on ChargeTimeEU:master.