[FEATURE] Add .gitignore-File

A .gitignore file is widely used to ignore local files and folders
which are generated by some IDEs.
[TASK] Remove obsolete and unused phpunit.xml
[TASK] Add a script to import base table layout
[TASK] Minor db importer script fix
Merge pull request #1 from andygrunwald/gitignore

[FEATURE] Add .gitignore-File
Merge pull request #5 from lolli42/master

[TASK] Remove obsolete and unused phpunit.xml
Enable EXT:documentation in LocalConfiguration

Make sure "documentation" is loaded to be able to run those tests
as well.
Merge pull request #6 from neufeind/master

Enable EXT:documentation in LocalConfiguration
[TASK] Introduce PackageStates file
[BUGFIX] Readd Workspaces and Version to the list of active Packages
Merge pull request #7 from tmaroschik/master

Travis Changes for PackageManager Patches
changes to master