improve address lookups and caching

* store results in separate files
* display current address during lookup
ARC Conversion
modern Obj-C syntax/literals
more @properties
preferences window

* with user-editable list of terms whose lines should be omitted from addresses
* with user-editable list of labels considered as »old«
* class ESTerms to manage those lists and their items’ on/off status
project: remove readmes from files to compile
move geocoding code into an NSOperation
move geocoding code into an NSOperation

still buggy (crashes when running KMLOperation the second time)
avoid a few free text strings for property names

… use the NSStringFromSelector(@selector(…)) technique
debugging, better decoupling, cleanup, ARC
Move ABGroup sorting category to its own files
Change class name Magic → ESEAAppController
Move +initialize (with standard defaults) to its own file
AppController reordering / cleanup
pretty print the KML output
Allow to run on X.8

* change project and info Plist
* use Google Earth icon, when Maps icon is not available
update project for 3b2
use file: instead of addressbook: URLs to link to the address’ card

* Google Earth does not seem open the addressbook: URLs anymore (even when set to use an external web browser)
* it’s a bit of a hack as getting the file path requires using an undocumented method (-[ABRecord account])
Name KML file and the address group inside it Contacts
Update project, Readme, appcast for 3b3