see extended description

- changed structure of partner point:
- in the xml and in the java-class one phone replaced by array of
phones;
- added workinghours array in xml and created java-package workinghours;
- added payment methods text field in xml;
- all classes for parsing data, writing to DB, reading from DB changed;

- PartnerActivity changed;
- structure of packages changed;
- added back button on action bar;