task #1 static code analysis

[reischlb]

Run static code analysis tool, and fix some of the detected bugs.

Some static code analysis tool: SonarQube, FindBugs, VS Code Analyzer, Codacy, Coverity Scan...

[BenjaminBako]

I will check EntityBasedDiff class and fix bugs and code smells. A fixed RenderingServices class yesterday.

[BenjaminBako]

Pls check EnityBasedDiff.java bugfixes pull request and merge if everything is all right.

[reischlb]

I merged it, it seemed okay.

[BenjaminBako]

I will check CodeEntityMapper.java and fix some bugs.

[BenjaminBako]

I made an issue here pls check!

[BenjaminBako]

I made a pull request here pls check and merge!

[DarkSetis]

I will check the project for bugs, using FindBugs.

[DarkSetis]

Made a few pull requests, merge them please.
CompareNames
CheckAll Ontologies
Engine Fixes
Entity Based Diff Cleanup

[micskeiz]

Please include a screenshot/export about the output of the static analysis tool and provide a short overview about its findings.

[DarkSetis]

I created a Wiki page for analyzing the findBugs output as requested @micskeiz
Addition

[BenjaminBako]

I created a Wiki page for why i replaced StringBuffers.