Remove the templates_dir warning

[elegaanz]

At each launch, Rocket tells us:

Error: missing configuration key: 'template_dir'
    => Warning: Using default templates directory '"/home/baptiste/Projects/plume/templates"'

And many people think it is an error, and that something went wrong during the installation. We should either set it during the setup with the .env, or use a custom Rocket config from Rust code.

Plume version (and/or commit): 0.2.0

[igalic]

It feels like we should make the templates (and static) dir its own repository so people can fork them to make their own themes

[elegaanz]

Actually, I would like to use askama for templates in the future, which would make it harder to put them in their own repository… However, theming with some CSS could be allowed in the future too.

Maybe we could still put them in another repository and "load" them with a git submodule (So if you want custom templates, you would clone Plume without the submodule, then clone in the template dir (or whatever) the repo of the theme we want…)

[igalic]

Actually, I would like to use askama for templates in the future, which would make it harder to put them in their own repository… However, theming with some CSS could be allowed in the future too.

can you elaborate on why it would make it harder?

[elegaanz]

Templates are embedded in the binary with askama, they are not read from the file system when the app starts. So if you want to change them you should recompile the whole app (well actually it's true that's it is not more complicated, only a bit longer).

[trinity-1686a]

Fixed by #327