Bug fixes (#184)

* Fix gist content when going back to editing

* Fix not outputting non-truncated large files for editon/zip download

* Allow dashes in usernames

* Delete keys associated to deleted user

* Fix error message when there is no files in gist

* Show if there is not files in gist preview

* Fix log parsing for the 11th empty commit

templates/base/gist_header.html

@@ -1,5 +1,5 @@
 {{ define "gist_header" }}
-<div class="py-10">
+<div class="py-10" id="gist" data-own="{{ if .userLogged }}{{ if eq .gist.User.Username .userLogged.Username }}true{{ end }}{{ end }}">
     <header>
         <div class="flex flex-col lg:flex-row">
             <div>