update links on NPSP Settings page and NPSP Resources page
Merge branch 'feature/264-settings-validator' of https://github.com/SalesforceFoundation/Cumulus into feature/264-settings-validator
Merge pull request #675 from SalesforceFoundation/feature/264-settings-validator

Updated missing links on NPSP Settings and NPSP Resource pages
Merge dev into feature/3.0-versions