#182 FileInputEditForm stores complete file path.
#182 Error handling and tests.
Merge pull request #184 from HPI-Information-Systems/fileInput_filepath

File input filepath
Update README.md

changed links in readme
Merge branch 'master' into refactor_data_source_page

Conflicts:
	frontend/src/main/java/de/uni_potsdam/hpi/metanome/frontend/client/datasources/DataSourcePage.java
	frontend/src/main/java/de/uni_potsdam/hpi/metanome/frontend/client/datasources/FileInputEditForm.java
	frontend/src/main/java/de/uni_potsdam/hpi/metanome/frontend/client/input_fields/CsvFileInput.java
Add missing DBSystem and change identifier of database connections in listbox.