adds portal-profile.log
revert
revert
add simple cache for markdown processing
more realistic item size and expire time after access
rework cache so that it reduces wiki page file downloads
update synapse repo artifact
Merge pull request #1011 from jay-hodgson/portal-logging

Portal logging
also use etag in the cache key
and fix tests
test cache hit and reduce item count to 35
Merge pull request #1013 from jay-hodgson/ram-cache

add simple cache for wiki download
PLFM-2824: portal side changes
Merge branch 'PLFM-2824' into SWC-1467
in progress