Sync submodule
Use UUID when unique ID is needed

The code concerning the need for storing a datatables  instance to a
variable was obfuscating the basic simplicity of this submission. That
will be submitted in a separate pull request
Merge pull request #213 from ddrury/Uniquid=UUID

Use UUID when unique ID is needed
Updated swedish translation by meliza
Merge remote-tracking branch 'webtrees-base/master' into develop