Log Message:
www/contao44: update to 4.4.12

From release announce:

4.4.9 (2017/12/14)

* Fixes several minor PHP 7.2 related issues.

4.4.10 (2017/12/27)

* Fixes a few minor issues including a problem with the comments bundle.

4.4.11 (2017/12/28)

* Reverts the identifier quoting changes.

  MySQL 8 and MariaDB 10.2

    In MySQL 8.0.2 and MariaDB 10.2.7 rows has been added as reserved
    word. Since we are using a field named rows in the tl_layout
    table, Contao is no longer compatible with the mentioned database
    versions.

    To avoid renaming the field in Contao and potentially causing
    theme import issues, we have added identifier quoting in version
    4.4.10(*1). Unfortunately this led to several unforeseen
    problems(*2), so we had to revert the changes in version 4.4.11.

    (*1) https://github.com/contao/core-bundle/pull/1262
    (*2) https://github.com/contao/core/pull/8813#issuecomment-354094845

4.4.12 (2018/1/3)

* Optimizes adding pages to the search index and fixes a few minor issues.