Artemis Customisation - Add View GAMOLA annotations function

Introduction
This document outlines specifications for customising the current release of Artemis to handle custom annotation results files. An AgResearch scientist needs to have link-outs to custom annotation results files from selected genomic features. In the following, the customised Artemis is called Artemis_Gamola.
AgResearch previously developed a customised version in 2006 with the required extensions, however this was handled as a proprietary fork of the main development, which was not subsequently maintained, and so the extensions are not available in the now current main Artemis release.
This time around we would like to ensure that the customised changes are done in consultation with the Artemis core developers, so that if possible they are fed back into the main project. 
Functional Specifications
Modification to the main menu items that are displayed when the “Option” menu is selected. The following screenshots demonstrate the difference between original Artemis and Artemis_Gamola. 
![menu](https://f.cloud.github.com/assets/5085592/2181910/cd3dd1a4-9770-11e3-8532-39fcc86083a2.png)

If “View Custom Annotation” is ticked, custom annotations are available to view. The following screenshots demonstrate the change from original Artemis to Artemis_Gamola. 
Original Artemis

![annotation](https://f.cloud.github.com/assets/5085592/2181924/aa544294-9771-11e3-8978-7efd2497b779.png)