install blockdiag family on t.e.o.

[lkraav <leho@…>]

as a picture says more than a thousand words every so often, i'd like to propose making ​blockdiag, seqdiag, actdiag (not sure about nwdiag) available for use on t.e.o.

​th:TracBlockDiagPlugin

for existing things, stuff like wiki:TracDev/RequestHandling would actually perhaps become maintainable.

for new content, i think this is a big barrier drop for having illustrations available for technical documentation, for example when trying to collaboratively figure out stuff with complexity levels of wiki:TracDev/Proposals/UserSystem.

[Christian Boos]

All the tickets for {20} from last year have probably been seen multiple times by now, yet are still to be triaged…

[lkraav <leho@…>]

It may make more sense to let the client side carry rendering load

​https://github.com/knsv/mermaid

[Peter Suter]

comment:3:ticket:11869 suggested another plugin for DB / UML diagrams. There's also ​th:GraphvizPlugin for generic graphs.

The client side rendering idea reminds me of the Workflow macro. Maybe that can be extended to support other types of diagrams.