make personalNote multiline, upload on OK and merge on refresh

Okay, this is a more clear PR.

* IConnector.supportPersonalNote
* personalNote became multiLine again
* uploadPersonalNote for supported connectors on OK
* merge in gatherMissingFrom
* new Class PersonalNote to parse and merge personal note
* added PersonalNoteTest
* removed javadoc in IConnector due to Samuels comment
* changed order in IConnector that uploadPersonalNote is not between supportOwnCoordinates and xyzModifiedCoordinates

Comments apreciated.