Merge pull request #383 from xschildw/remove-portal-endpoint

Remove portal endpoint from stackConfig
fix challenge overview page
Merge pull request #388 from jay-hodgson/release-z

fix challenge overview page (merge from release-y)
Merge pull request #389 from jay-hodgson/develop

fix challenge overview page (merge from release-y)
SWC-605: set load listener before setting url, and use HIDDEN style to fix calcuation
SWC-605: block Image widget editor insertion of markdown unless the file extension is right.  suggest png or jpg for images
Merge pull request #390 from jay-hodgson/release-z

SWC-605: merging up to release-z from develop after re-evaluation of impact/risk
SWC-519: widgetize subpages
SWC-664: working version with the new chunking api
changes from code review
fix tests and update pom synapse artifact to fix build
Merge pull request #391 from jay-hodgson/SWC-519

SWC-519: widgetize wiki pages table of contents
SWC-664: from code review
Merge pull request #392 from jay-hodgson/SWC-664

Swc 664: use new chunked file upload api
Merge branch 'release-z' into develop
SWC-666: tooltip on name
SWC-668: make folder view more like project view.  show wiki in the same place
updated version
Merge pull request #398 from john-hill/develop

updated version
Merge pull request #393 from jay-hodgson/SWC-666

SWC-666: tooltip on name