Small IO tweaks, robots.txt, and README improvements (#173)

* feat: add link to drop version in footer

* feat: add drop logo aria label

* feat: disable all crawling by bots

for now i think this is a good default as all of drop is currently behind auth

* feat: hide logo when inside wordmark for aria

* docs: update readme and contributing

* feat: default page in setup wizzard is img

* ci: remove redundant perm in release ci

* docs: update translation links and add progress image

* fix: lang selector using wrong weblate link

server/components/LanguageSelector.vue

@@ -3,7 +3,7 @@
     <LanguageSelectorListbox />
     <NuxtLink
       class="mt-1 transition text-blue-500 hover:text-blue-600 text-sm"
-      to="https://translate.droposs.org/projects/drop/"
+      to="https://translate.droposs.org/engage/drop/"
       target="_blank"
     >
       <i18n-t