add Day Calendar and Gregorian Calendar. But there are no proper tests
yet.
Squashed commit of the following:

commit 5c970d24c74f6e94bc4753f5e97bad77b3f58d6c
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Mon Nov 18 08:19:33 2013 +0100

    what ever

commit fd6b12c2ab3bc5ed4c88334ba5ab80391cc8748e
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Mon Nov 18 08:17:56 2013 +0100

    time is now unix time again

commit efaaff768b1f175d645a6f05fbb04b6753fce187
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Sun Nov 17 11:36:35 2013 +0100

    docu

commit c674ccb1ed7877487773d3521d283cb3f66c8eed
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Sun Nov 17 11:35:26 2013 +0100

    fixed that problem, but now its for some reason bad

commit 3eb92810dd05818c5a30e1c2ae59fe6e171b7198
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Sun Nov 17 11:30:15 2013 +0100

    there is something wrong with the day transformation

commit ce9d0dd0cac1afe1ce526772fc6d6eede37bac19
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Sun Nov 17 09:23:19 2013 +0100

    awesome now it works

commit 3f7ffe3b937ecb9a0541f651d664ffd0903baa25
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Sun Nov 17 07:35:39 2013 +0100

    i should work with a class between Date and Gregorian

commit ecf40d6f0980104802b4a2486b085a6e3d5f1a80
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Sun Nov 17 07:32:00 2013 +0100

    looks like we tricked it

commit 185ba628a35740498caa8ee74f62b7b67a3a7065
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Sun Nov 17 07:27:15 2013 +0100

    looks like we tricked it

commit a3a30143f3745e28aa3851a7fcc31a1b1717d377
Merge: 677c84d 27096c9
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Sun Nov 17 07:13:04 2013 +0100

    Merge branch 'day'

commit 677c84d01edbee5245bea240d1cad998e59be21e
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Sun Nov 17 07:09:54 2013 +0100

    Gregorian Calendar Tests fail

commit 27096c9622c999e86706d7667b4bcf318b2df6e9
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Sun Nov 17 06:53:04 2013 +0100

    gregorian finished? now tests

commit 02722d3f6a55dbbeb1317278fec1c0ef7cf629b7
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Fri Nov 15 11:04:17 2013 +0100

    important note

commit 8ae96b4fa7573a20033193862c422e0b4663922e
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Fri Nov 15 10:55:47 2013 +0100

    still transformation stuff

commit 1f2b1e9d97ff916695dc701a6f8c6250388ba34c
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Fri Nov 15 10:52:26 2013 +0100

    still transformation stuff

commit d28459c772e59a8b55686ecd50862840c20085ee
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Fri Nov 15 10:18:07 2013 +0100

    on the gregorian day transformation

commit fd4ba05b09408468ad015d727fae3ee86a9964db
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Fri Nov 15 10:17:40 2013 +0100

    on the gregorian day transformation

commit a329a6e8b4a2828c9abea5ff8bbb094776f7d371
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Fri Nov 15 09:32:50 2013 +0100

    moar stuff for the gregorian calendar

commit 5002f19b44d85c02d989189f852be30157bee654
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Fri Nov 15 09:26:31 2013 +0100

    create gregorian calendar now

commit 417c5e4eee436db20b13f23b4accd0b7c5fd679f
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Fri Nov 15 09:11:10 2013 +0100

    add helper class for day calendar systems
Merge branch 'master' into day
moar tests for gregorian date
moar tests for gregorian date
some moar structure in the objects now
constructor correct
now we found something that is wrong
ok thats better