Exports - Commented the code and use of StringBuilder to build query

I've commented the code in ExportService and TransformService and added javadoc documentation.
I also used StringBuilder object instead of the simple String to build the query.
Merge branch 'newdev' into edina
Export - Cleaned up the TransformService
Transform - Force getBytes to use UTF-8

getBytes() is using the platform's default charset which on Solaris donesn't seem to be UTF-8.
Therefore we are not using getBytes(String charsetName) function to make sure UTF-8 is used.
Merge branch 'newdev' into edina