Merge pull request #489 from Atheros1/master

changed API commands which modify and list the address book per discussi...
translation updated
resized main window to fit translations without scrolling

Now all translations fit in wothout scrolling (tested de, eo, fr and ru)
Only UPDATE readStatus if it changed
Merge pull request #490 from bitnukl/master

German translation update and main window resize
Merge pull request #491 from grant-olson/check_readstatus_before_update

Only UPDATE readStatus if it changed
Merge pull request #494 from Atheros1/master

Smarter advertisement of object hashes and peers
most initial work on v4 pubkeys completed
further v4 address work
more v4 address work. Should be done.
ignore eighteenByteRipe value if user specified numberofnullbytesonaddress in keys.dat file
small fixes to address generator and listAddresses2
raise default demanded difficulty from 1 to 2
Increment version number to v0.4.0
_verifyAddress support v4 addresses