(preliminary) certs table
certs: close in from both sides :)
Fix recent cert code
experimental cert import
join cert info into query routines
experimental cert display
experimental cert list, proper
add keys we don't know about, just for fun
add "show unknown signatures" button
forgot to commit two layout files
add view cert activity
add menu to viewcertactivity
add empty view to viewkeycertsfragment
add certify action button to viewkeymainfragment
certify: preserve user id certificates when saving secret keys
certs: provider cleanup and bugfixing
certs: green dots for verified status \o/
certs: more filters, better initial uid selection, code cosmetics

- add three types of filters for certificate list (ui looks like crap
      there, need to work on that)
    - select uncertified uids by default in CertifyKeyActivity
    - move some code around in KeychainProvider, 's slightly less hacky
now
Add missing resources
Move Keychain* to Apg*

There'll be many changes in Keychain* files, so let them diverge now
for easier merging in both directions.