add ER and IE diagrams to navbar and sitemap

[VladimirAlexiev]

The following two:

• https://plantuml.com/er-diagram
• https://plantuml.com/ie-diagram

Are missing from:

• navbar on top of https://plantuml.com/
• list in https://plantuml.com/ section https://plantuml.com/ (IE is present but is called Entity Relationship diagram (IE/ER))
• the sitemap https://plantuml.com/sitemap-language-specification

Please call them consistently:

• Entity Relationship diagram (ER in navbar)
• Information Engineering diagram (IE in navbar). I've changed the page title and info block in http://alphadoc.plantuml.com/doc/markdown/en/ie-diagram

@The-Lum can any of us do this, or this chore falls to @arnaudroques ?

[The-Lum]

Hi @VladimirAlexiev,

Can any of us do this, or this chore falls to @arnaudroques?

The answer is indeed: this chore falls to @arnaudroques!

Regards,
Th.

[arnaudroques]

Hi all,

Yes, sorry about that!
Thanks for pointing this out.

I'll fix these in the incoming days.

Best regards,