Commit Briefs
add an entry for text/gemini in the `types' example
if using `types' the internal listing is not used, so show how to add the entries for text/gemini when using /usr/share/misc/mime.types.
allow add_mime to fail
add_mime nows allocate dinamically copies of the passed strings, so that we can actually free what we parse from the config file. This matters a lot especially with lengthy `types' block: strings that reach the internal mapping are never free'd, so every manual addition is leaked.
rename the quickstart page to guide in the navbar
it occupies less horizontal space which avoids the wrapping on (some) mobiles