Add features in optoins file and test data to view custom annotation

Two features are added in Options file. 

enable_Custom_Annotation = false
view_Custom_Annotation = false

enable_Custom_Annotation is used to indicate whether "View Custom Annotation" can be seen in the menu. 
view_Custom_Annotation is used to set whether "View Custom Annotation" is ticked or not in the menu. 

Also, test data L_gasseri_fragment_demo.consolidated_results.zip is added which is instored in folder test\data. Unzip the test data, then open L_gasseri_fragment.fasta.cb.gb, users should be able to view custom annotation.