Modified the test for nonlationcharacter.
Add test cases to test combination of allow and deny rules. Modify the generate id method to make sure id is unique.
Removed unwanted code.
Fixed a bug in previous commit and added a test for characters like mu.
Adding test for checking Metacat behaviour when characters outside A-Z,a-z,0-9 are entered.
Related bugs: 1711, 1538 (1711 has been fixed as tested by this file. Have to add code to test 1711)
Currently checking for> when < > & is entered - test fails as expected as document is invalid...