Merge pull request #678 from jay-hodgson/develop

merge from release-20
updated banners
Merge pull request #679 from dburdick/swc-1036

updated banners
Merge pull request #680 from dburdick/swc-1036

updated banners
SWC-1035: add profile to open places
SWC-1033
really clean up my challenges
SWC-1018: do not create duplicate invitation/request
Merge pull request #684 from jay-hodgson/SWC-1018

SWC-1018: do not create duplicate invitation/request
Merge pull request #681 from jay-hodgson/SWC-1035

SWC-1035: add profile to open places
Merge pull request #682 from jay-hodgson/SWC-1033

SWC-1033: do not set target
Merge pull request #683 from jay-hodgson/SWC-1002

SWC-1002: really clean up my challenges
Merge branch 'release-20' into develop
update synapse artifact to grab new synapse java client (PLFM-2320)