code style: operator spacing

coding style: control flow whitespaces

SVG based smileys

This patch replaces our old gif based smileys by SVG based ones from the
Twemoji project. This allows for scaling the emojis with the text
they're used in.

Remove obsolete attributes at <script> tag

Nowadays it is not necessary to specify "type" or "charset" attribute at <script> tag:

1. "type" attribute defaults to "application/javascript", so there

Remove obsolete attributes at <script> tag

Nowadays it is not necessary to specify "type" or "charset" attribute at <script> tag:

1. "type" attribute defaults to "application/javascript", so there is no need to specify that. The recent value "text/javascript" is obsolete in favor of the default "application/javascript", as stated e.g. here: https://www.iana.org/assignments/media-types/media-types.xhtml#text

2. "charset" attribute of the <script> tag defaults to encoding be the same as the encoding of the script element's node document. As DokuWiki's default encoding is "utf-8", there is no need to specify this encoding in external resources. See: https://html.spec.whatwg.org/multipage/scripting.html#the-script-element

Manual merging, closes #2921.

Co-Authored-By: petrkajzar <58340153+petrkajzar@users.noreply.github.com>

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Support "local" subdir when listing the smiley directory

Update index.php

1 typo

add index file similar to fileicons to show active smileys