Fix potential NPE if binding is null or empty

Fixes 52North/sos-importer#10
Fixed bug in test

Fixes 52North/sos-importer#6
Fixed bug in test: missed Math.abs() for negative offset values.

Fixes 52North/sos-importer#6

Damn you cubic planet earth.
Code formatting and remove useless javadoc
Code formatting
Fix reference in javadoc
Replace string + string1 by new StringBuffer(string).append(string2).toString()
Code formatting
Fix generics warning
Fix BadLocationException in Step2Panel when reading CSV file with empty lines by replacing StringTokenizer by String.split(regEx)

Fixes 52North/sos-importer#11
Related to http://bugs.java.com/bugdatabase/view_bug.do?bug_id=4418160
Merge pull request #12 from EHJ-52n/develop

Fix NPE when Binding is not defined, fix hardcoded timezone in tests, fix BadLocationException when opening csv files with empty lines