[TASK] EXT:dbal Uniform extension directory structure

Move mod1 directory to Modules/Dbal/
Move language files to Resources/PRivate/Language/

Resolves: #68451
Releases: master
Change-Id: I9e3c2238b2c71714c2f936a13dffc4029b3712f2
Reviewed-on: http://review.typo3.org/41796


Reviewed-by: Susanne Moog <typo3@susannemoog.de>
Tested-by: Susanne Moog <typo3@susannemoog.de>
Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Tested-by: Andreas Fernandez <typo3@scripting-base.de>