Result copying, connection choosing and bug fixes

This release fixes some minor bugs and has some tiny enhancements

1. Aliases are readonly by default when creating them
2. General UI aesthetics
3. Query description is now displayed in the result

Also some issues were addressed:

• #1 An extra drivers directory is added to the assembly which is used for the classpath
• #2 Subqueries can be chosen to be run on a connection of choice
• #4 The copying of rowdata as plain text is now more advanced
• #7 The vertical split bar has been brought back to life