Refactoring java part
Refactoring part of language files
Refactoring Language Files Last Part
Refactoring HTML Files
Deleted obsolete image files
Change: Just one Translation File per Language
Adjusted File Name corresponding to Java conventions
Change: Limited DropZone.js to PDF files


Merge branch 'master' of https://github.com/it-raum/recruiter.git

Conflicts:
	src/main/webapp/WEB-INF/view/frontend/candidate.html
	src/main/webapp/WEB-INF/view/frontend/skills.html
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