EST. Made the runMutalyzer() function in the webservices more robust and added
some better error messages in the Retriever module.

Mutalyzer.py:
- A deletion in the first 3 nucleotides on an EST resulted in a crash, this is
  fixed.
- A delins with a deletion and an insertion with either a common prefix or
  suffix was handled incorrectly.

webservice.py:
- Made the retrieval of information in the runMutalyzer() function more robust
  by using the getIndexedOutput() function of the Output object.

Retriever.py:
- Added a more sensible error when a record could not be retrieved.

menu.html:
- Fixed some capitalisation for more consistency in the web pages.



git-svn-id: https://humgenprojects.lumc.nl/svn/mutalyzer/trunk@104 eb6bd6ab-9ccd-42b9-aceb-e2899b4a52f1