Stop duplicating investors for a category
Test getCategoryIndex and getPortfolioIndex
Test addInvestorToExpertCategory
Merge pull request #227 from krazemon/investordedup

Stop duplicating investors for a category
Merge pull request #230 from krazemon/getIndexTests

Test getCategoryIndex and getPortfolioIndex
Fix merge conflicts
Merge pull request #231 from krazemon/addInvestorToExpertCategory

Test addInvestorToExpertCategory
Fix merge conflicts
Fix typos
Fix merge conflicts