Port to drupal7

There is allways a failure:

admin/content/buymeabeer ==>
Fatal error: Call to undefined function node_get_types() in /sites/all/modules/buymeabeer/buymeabeer.admin.inc on line 59

THX a lot dereine...

@dereine: I cannot successfully apply your 2nd patch to CVS HEAD receiving several errors about failed Hunks.

patching file buymeabeer.admin.inc
Reversed (or previously applied) patch detected!  Assume -R? [n] y
Hunk #6 FAILED at 55.
Hunk #7 FAILED at 71.
2 out of 7 hunks FAILED -- saving rejects to file buymeabeer.admin.inc.rej
patching file buymeabeer.info
Hunk #1 succeeded at 1 with fuzz 1.
patching file buymeabeer.module
Reversed (or previously applied) patch detected!  Assume -R? [n] y
Hunk #3 FAILED at 34.
Hunk #4 succeeded at 80 (offset 2 lines).
Hunk #5 FAILED at 93.
2 out of 5 hunks FAILED -- saving rejects to file buymeabeer.module.rej
The next patch would create the file js/buymeabeer_admin.js,
which already exists!  Assume -R? [n] y
patching file js/buymeabeer_admin.js
Hunk #1 FAILED at 1.
File js/buymeabeer_admin.js is not empty after patch, as expected
1 out of 1 hunk FAILED -- saving rejects to file js/buymeabeer_admin.js.rej
The next patch would create the file translations/de.po,
which already exists!  Assume -R? [n] y
patching file translations/de.po
Hunk #1 FAILED at 1.
File translations/de.po is not empty after patch, as expected
1 out of 1 hunk FAILED -- saving rejects to file translations/de.po.rej

@dereine: One question about use of t() inside define() (see http://drupal.org/node/448118) in your D7 patch. Is this not an issue anymore in D7?

imho, dereine should assign this issue to himself as it seems he have forgotten to create the patch that he mentioned in #7. I understand dereine might be too busy as he is involved in many modules simultaneously. Good luck dereine.

Closing this as duplicate, in order to start with a clean slate : #1669224: Some improvements to the Drupal 7 version