Adjust copyrights years

/**
 * SeekQuarry/Yioop --
 * Open Source Pure PHP Search Engine, Crawler, and Indexer
 *
 * Copyright (C) 2009 - 2023  Chris Pollett chris@pollett.org
 *
 * LICENSE:
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 * END LICENSE
 *
 * @author Eswara Rajesh Pinapala
 * @license https://www.gnu.org/licenses/ GPL3
 * @link https://www.seekquarry.com/
 * @copyright 2009 - 2023
 * @filesource
 */
/*
    editor.css
    Stylesheet for text-area editor associated with editing wiki pages
 */
.wiki-editor
{
    display: block;
    margin: 0 auto;
}
.wiki-editor div
{
    padding: 5px;
}
.wiki-buttons
{
    margin-bottom:2px;
}
.wiki-buttons input
{
    border-radius: 0;
    border-style: solid;
    cursor: pointer;
    display: inline-block;
    height: 36px;
    padding: 0;
    margin:0;
    vertical-align: top;
    width: 36px;
}
.wiki-buttons select
{
    background: lightgray;
    border: 1px solid #EEE;
    border-radius: 0;
    color: black;
    font-size:14pt;
    height:36px;
    padding: 0;
    margin: 2px 0 0 0;
}

.wiki-popup-prompt
{
    background-color:gray;
    display: none;
    height:100%;
    left: 0;
    right:0;
    opacity:0.95;
    position:fixed;
    top: 0;
    width:100%;
    z-index:100;
}

.wiki-popup-content
{
    background-color: white;
    border: 16px solid #8A4;
    height: 3in;
    left: 20%;
    right: 20%;
    overflow: auto;
    padding: 16px;
    position:fixed;
    top: 20%;
    width: 5in;
    z-index:101;

}
.wiki-popup-content h2
{
    padding:30px;
}
.wiki-popup-content div
{
    padding:15px;
}
.wiki-popup-content select
{
    font-size: 18pt;
}
.wiki-popup-content table
{
    margin: auto;
}

.wikibtn-bold
{
    background: url(../resources/wiki_button_images/wikibtn-bold.png) no-repeat;
}
.wikibtn-underline
{
    background: url(../resources/wiki_button_images/wikibtn-underline.png)
        no-repeat;
}
.wikibtn-bullets
{
    background: url(../resources/wiki_button_images/wikibtn-bullets.png)
        no-repeat;
}
.wikibtn-heading
{
    background: url(../resources/wiki_button_images/wikibtn-heading.png)
        no-repeat;
}
.wikibtn-hr
{
    background: url(../resources/wiki_button_images/wikibtn-hr.png) no-repeat;
}
.wikibtn-hyperlink
{
    background: url(../resources/wiki_button_images/wikibtn-hyperlink.png)
        no-repeat;
}
.wikibtn-italic
{
    background: url(../resources/wiki_button_images/wikibtn-italic.png)
        no-repeat;
}
.wikibtn-nowiki
{
    background: url(../resources/wiki_button_images/wikibtn-nowiki.png)
        no-repeat;
}
.wikibtn-numbers
{
    background:url(../resources/wiki_button_images/wikibtn-numbers.png)
        no-repeat;
}
.wikibtn-strike
{
    background: url(../resources/wiki_button_images/wikibtn-strike.png)
        no-repeat;
}
.wikibtn-table
{
    background: url(../resources/wiki_button_images/wikibtn-table.png)
        no-repeat;
}
.wikibtn-search-widget
{
    background: url(../resources/wiki_button_images/wikibtn-search-widget.png)
        no-repeat;
}

.wikibtn-slide
{
    background: url(../resources/wiki_button_images/wikibtn-slide.png)
        no-repeat;
}

.wikibtn-definitionlist
{
    background: url(../resources/wiki_button_images/wikibtn-definitionlist.png)
        no-repeat;
}
.wikibtn-centeraligned
{
    background: url(../resources/wiki_button_images/wikibtn-centeraligned.png)
        no-repeat;
}
.wikibtn-rightaligned
{
    background: url(../resources/wiki_button_images/wikibtn-rightaligned.png)
        no-repeat;
}
.wikibtn-leftaligned
{
    background: url(../resources/wiki_button_images/wikibtn-leftaligned.png)
        no-repeat;
}
.wikibtn-bold:hover,
.wikibtn-bullets:hover,
.wikibtn-heading:hover,
.wikibtn-hr:hover,
.wikibtn-hyperlink:hover,
.wikibtn-italic:hover,
.wikibtn-nowiki:hover,
.wikibtn-numbers:hover,
.wikibtn-search-widget:hover,
.wikibtn-strike:hover,
.wikibtn-table:hover,
.wikibtn-underline:hover,
.wikibtn-slide:hover,
.wikibtn-definitionlist:hover,
.wikibtn-rightaligned:hover,
.wikibtn-leftaligned:hover,
.wikibtn-centeraligned:hover
{
    background-position: 0 -36px;
}