#117 Update db-schema pptx: add data types.
Merge branch 'master' into db-schema-description
#55 GetConfigurationRequirements returns an ArrayList.
Merge branch 'master' into getConfigurationRequirement
Merge branch 'master' into db-schema-description
Merge pull request #236 from HPI-Information-Systems/db-schema-description

Db schema description
Merge pull request #241 from HPI-Information-Systems/getConfigurationRequirement

#55 GetConfigurationRequirements returns an ArrayList.
Update docs in ConfigurationRequirement.
Merge branch 'master' into ConfigurationRequirement