organising imports
Little changes/fixups

- String equality testing
- Appending chars is _slightly_ faster than strings
- Also removing unused private methods.
Fix-ups in the tests

- Organising imports, mostly
- Unused assignments
Check each page here...
ArrayLists because why not?
Spelling error

'supersede' not 'supercede' ;)
Spelling error

'supersede' not 'supercede' ;)
updated pom to 47
Spelling error

'supersede' not 'supercede' ;)
Merge branch 'hr-tiny-little-optimisations' of github.com:nla/amberdb into hr-tiny-little-optimisations
Merge remote-tracking branch 'origin/master' into hr-tiny-little-optimisations

Conflicts:
	pom.xml
	test/amberdb/model/WorkTest.java
	test/amberdb/sql/AmberGraphDaoTest.java
Merge pull request #69 from nla/hr-tiny-little-optimisations

Little fix ups