SWC-774
Merge pull request #499 from jay-hodgson/release-8

SWC-774: merge from release-7
SWC-778: use a span instead of an anchor, and style the span
Merge pull request #504 from jay-hodgson/release-8

SWC-778: use a span instead of an anchor, and style the span
SWC-783: hide project tab ui in alpha mode only
Merge pull request #510 from jay-hodgson/release-8

SWC-783: hide project tab ui in alpha mode only
Merge branch 'release-8' of https://github.com/Sage-Bionetworks/SynapseWebClient into develop
Merge pull request #514 from jay-hodgson/develop

Merge down from release-8 (hide tabs and fix wiki subpage links)