If the file already exists
Fix: Do not use a static list for all file names
Testing page including a simple Selenium Testcase
Merge branch 'feature_fileUploadControl' into dev

Conflicts:
	src/main/java/de/fau/osr/amos/docmatic/FileUploadPage.html
	src/main/java/de/fau/osr/amos/docmatic/FileUploadPage.java
Merge branch 'feature_QA' into dev
improving the existing GUI
Merge branch 'feature_GUIimprovement' into dev