Reviewed-on: https://git.joinsharkey.org/Sharkey/Sharkey/pulls/284

Reviewed-on: https://git.joinsharkey.org/Sharkey/Sharkey/pulls/283

note length is now configurable through the config file

Closes #281

falls back to 3000 (misskey default) if not used/included in config

I could have factored out all the lines that set cache headers, but
that would have made future merges even more complicated ☹️

thanks ShittyCopper for reporting the problem!

Also adds the visibility function to mastodon imports

Glitchy/Broken CSS - Won't get any fixes by free so it is best to just undo the change

Closes #279
Closes #278

Seems like due to misskey deleting reaction.vue and making it a new file called emoji-picker.vue caused the default like setting to vanish

Reviewed-on: https://git.joinsharkey.org/vavency/Sharkey/pulls/1

Closes #271

Closes #272
Closes #273
Closes #274

Reviewed-on: https://git.joinsharkey.org/Sharkey/Sharkey/pulls/257

Closes #264

Closes #277

this should be enough "merging" of lookup&search:

* partial usernames are searched as part of notes from the widget, and
as part of known usernames in "search users"
* tags are searched as part of notes from the widget and the "search
notes" page
* full usernames always navigate to the profile page of that
user (which will fetch the profile if possible)

as an extra nicety, if "search notes" is disabled, the search widget
handles hashtags like the lookup function does