Sync Spanish manual with ed20c6b9, #2
Fix remove_numbered_files_not_in_list doing exactly not what it said.
Fix insertion
Fix un/registering hooks at each message parse.
Don't go up in subject if we're selecting
Add also ClamAV URL
Update example list of plugins using network
Sync Spanish manual with ed20c6b9, #3 and the last one!
Remove useless returns
Factorize folderview_find_next_{unread,new,marked}
Don't enter draft folders when navigating to next unread/new/marked
remove no-longer-needed fast_strftime()

these date formats no longer rely on translations
some minor improvements in English usage
Fix bug 3039, very long parsing time in HTML email. Avoid strcasestr
on very long buffers.
Fix bug 3039 more - Why read line by line?
Remove unnecesary file with required autoconf version
Fix typo, thanks wwp!
Revert "Remove unnecesary file with required autoconf version"

Because it's required to "make dist" to work properly.
Add a note about bogo's initial learning
Add note about Fancy & remote content