add unittests for ldapom
tests for get_ldap_node and retrieve_ldap_node
change documentation format to doxygen
change documentation style to doxygen in openldap/__init__.py
convert everything into unicode-strings

* as python-ldap expects strings, convert everything to unicode strings
more unicode fixes and tests

* fixes #18
Merge remote-tracking branch 'hadinet/master'

Conflicts:
	ldapom.py
test and fix get_parent

* add tests for get_parent
* make it unicode aware
Merge pull request #24 from f1ori/master

Proper unicode handling through out the code