implemented file system #13
Merge pull request #31 from przytads/13

implements file system, fixes #13
added directory .settings to gitignore
add hibernate model for csar refs #15

added mysql dependency to pom
Merge pull request #32 from eiselems/15

add hibernate model for csar refs #15
Added log4j 2 to the project
* Added dependencies to pom
* Added configuration for log4j (log4j2.xml in WEB-INF)
* Added configuration for log4j to the web.xml
* Replaced sysouts with logs
fixes #14 Added an abstract service
Added the AbstractService class for the services
Merge pull request #33 from tothfn/30

Add log4j 2 to the project fixes #30

* Added dependencies to pom
* Added configuration for log4j (log4j2.xml in WEB-INF)
* Added configuration for log4j to the web.xml
* Replaced sysouts with logs
Merge branch 'master' into 14
refs #13 added a addError method to the abstract service
Changed the add error method to protected
Merge pull request #34 from tothfn/14

fixes #14 Added an abstract service