fixes failing test case ValidationTest::testDecimalLocaleSet() on OS X

thousand separator isn't set in de_DE but in da_DK
Unset $db in DboSource::read().

After calling $db->queryAssociatin(), it is necessary to unset db. 
This reverts commit 52d425737af584d33352ff0540dbf769006d82f5.
Merge pull request #3480 from Schlaefer/fix-testDecimalLocaleSet-OSX

fixes failing test case ValidationTest::testDecimalLocaleSet() on OS X
Fixes baked postLink()s
Merge pull request #3483 from dereuromark/master-hotfix-bake

Fixes baked postLink()s
Remove x bit on files.

PHP files should not have executable permission set.
Merge pull request #3481 from okinaka/master

Unset $db in DboSource::read().
Hotfix for older baked templates regarding postLink()
Merge pull request #3484 from dereuromark/master-hotfix-bake

Hotfix for older baked templates regarding postLink()
Fix issues where emails would have multipart/mixed when they should not.

When sending multi-part emails with no attachments we shouldn't include
the outer multipart/mixed header as it confuses Outlook and causes it to
show the email as having attachments even though there are none.

A bunch of tests need to be adjusted as the empty multipart/mixed
container has been removed.

Fixes #3474
Fix test I forgot to fix in b8fa7ce1349e48047539a83f574c3ff87849cafa