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...