prov markdown editor in progress
roll back unintentional change to TablePageWidget
fixes to view
SWC-1575: convert prov editor
clean imports only
SWC-1587: convert youtube editor
and convert rendering side
no edit without column id
typo
Merge pull request #1368 from jay-hodgson/SWC-1575

SWC-1579: convert prov graph markdown editor
Merge pull request #1371 from jay-hodgson/SWC-1587

SWC-1587: convert youtube editor
Merge pull request #1373 from john-hill/SWC-1737

no edit without column id
merged from develop