GUACAMOLE-926: Switch out connection icon to a better looking one.

guacamole/src/main/frontend/src/app/settings/styles/buttons.css

@@ -63,5 +63,5 @@ a.button.add-connection-group::before {
 }
 
 a.button.import-connections::before {
-    background-image: url('images/action-icons/guac-monitor-add-many.svg');
+    background-image: url('images/action-icons/guac-file-import.svg');
 }

guacamole/src/main/frontend/src/images/action-icons/guac-file-import.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="64" height="64"><path d="M8.813 0A1.813 1.813 0 0 0 7 1.814v60.373C7 63.188 7.812 64 8.813 64h48.374C58.188 64 59 63.188 59 62.187V13.89c0-.482-.19-.943-.531-1.284L46.375.531c-.34-.34-.8-.53-1.281-.531H8.812zm37.49 3.02 10.885 10.867H46.303V3.02zM32.422 12a1.642 1.642 0 0 1 1.258.586L50.459 32.6a1.642 1.642 0 0 1-1.258 2.697h-8.84v17.98a1.642 1.642 0 0 1-1.64 1.643H26.623a1.642 1.642 0 0 1-1.643-1.643v-17.98h-9.337a1.642 1.642 0 0 1-1.258-2.697l16.78-20.014A1.642 1.642 0 0 1 32.421 12z" style="fill:#fff;stroke-width:1.35948"/></svg>

guacamole/src/main/frontend/src/images/action-icons/guac-monitor-add-many.svg

@@ -1,77 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<svg
-   width="64"
-   height="64"
-   viewBox="0 0 64 64"
-   version="1.1"
-   id="svg3828"
-   sodipodi:docname="guac-monitor-add-many.svg"
-   inkscape:version="1.1.2 (0a00cf5339, 2022-02-04)"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
-   xmlns="http://www.w3.org/2000/svg"
-   xmlns:svg="http://www.w3.org/2000/svg">
-  <defs
-     id="defs3832" />
-  <sodipodi:namedview
-     id="namedview3830"
-     pagecolor="#5b5b5b"
-     bordercolor="#666666"
-     borderopacity="1.0"
-     inkscape:pageshadow="2"
-     inkscape:pageopacity="0"
-     inkscape:pagecheckerboard="true"
-     showgrid="false"
-     inkscape:zoom="6.546875"
-     inkscape:cx="33.603819"
-     inkscape:cy="22.377088"
-     inkscape:window-width="2048"
-     inkscape:window-height="1025"
-     inkscape:window-x="0"
-     inkscape:window-y="28"
-     inkscape:window-maximized="1"
-     inkscape:current-layer="svg3828" />
-  <g
-     transform="translate(-19.073 1.734) scale(.10947)"
-     style="fill:#fff"
-     id="g3822">
-    <path
-       style="fill:#fff;fill-opacity:1;stroke:#000;stroke-width:.00956892;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none;stroke-dashoffset:0"
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-       transform="translate(174.22 231.813) scale(5.22525)"
-       id="path3818" />
-    <rect
-       ry="18"
-       rx="18"
-       y="524.187"
-       x="244.268"
-       height="38.636"
-       width="197.179"
-       style="fill:#fff;fill-opacity:1;stroke:#000;stroke-width:.05000001;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none;stroke-dashoffset:0"
-       id="rect3820" />
-  </g>
-  <path
-     style="fill:#ffffff;stroke:none"
-     d="m 48.309,0.865 h 7.518 V 23 h -7.518 z"
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-  <path
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-</svg>