repository: filename extensions

[tg-x]

this includes config options & fixes for the repo filename extensions

pages always have an extension now, this way the code got much simpler, we don't have two different kinds of names for the pages.

In the config you can either set an attribute file prefix (I prefer a dot because it's hidden then) or an extension. Also, I added a setting for the index page name.

Later I might improve this further to use extensions according to the mime type of the page (read from the attribute file)

[minad]

what I like:

• configurability of prefix/postfix, but maybe use a pattern 'prefixpostfix', where \ is replaced with the name
• hidden files for attributes are a good idea

what I don't like:

• use of a single name for pages. text editors etc might determine the type from the extension, this breaks then. I wouldn't do this only because gets simpler then. A better fix would be to add more comments, my fault :) We should think about which solution is really preferable.

I added a few code comments

[tg-x]

• use of a single name for pages: you mean that filenames always end with content_ext? that's what I was planning to fix as the next step: first read mime type from .Page then look up extension with MimeMagic, then we can read Page.ext actually in this case we wouldn't even need configuration for extensions & prefixes

[minad]

this introduces much magic. What if there exist multiple files with different extensions?

[tg-x]

there shouldn't be multiple extensions for the same page, if the mime type is changed then the extension would change as well, but it's also not a problem if somebody creates a file with a same name but with different extension as an already existing page, because the mime type is in the attribute file from which you can determine the extension

well, we can also have a prioritized list of extensions to try if there's no attribute file, but we could just as well require an attribute file then we won't have to guess