First changes to support the response streaming:
- add response writer for streaming
- move SOAP response encoding to writer
Merge branch 'develop' of https://github.com/CarstenHollmann/SOS into streaming
Picked changes from inspire branch
Rename classes
Delete renamed classes
Add setting to force streaming responses
StreamingEncoder interface
Add generic XmlWriter and generic XML writer for XMLEventWriter and XMLStreamWriter
Typo
Add further constants
Add new settings to SQL script
Changes to support output streaming for SOAP 1.2 response.
- Both works, the old encoding and the new streaming encoding
- Streaming support can be disabled via settings
Further streaming implementations:
- Extend AbstractResponseEncoder to support streaming
  - derived encoder classes should override new methods. Else the existing XML encoding process is used.
- GetObservationResponse
Cover procedure table name with backticks (`) to tell hibernate to use quotes
Use quoted table names
Add methods to execute SQL statements after schema creation, required for SQL Server
Add post schema creation executions
Add support for SQL Server
Upate SQL scripts
Update Datasource implementations:
- after adding SQL Server support some changes were needed to make it work as before