Metadata editting and local only JS and pdf to image change and format pages (#44)

* Formatting

* changeMeta

* pdf to img fix

* foramtting

* new image

* lang changes

src/main/resources/static/css/dark-mode.css

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+/* Dark Mode Styles */
+body {
+    background-color: #333;
+    color: #fff;
+}
+
+.dark-card {
+  background-color: #333 !important;
+  color: white;
+}
+.jumbotron {
+  background-color: #222; /* or any other dark color */
+  color: #fff; /* or any other light color */
+}
+
+.list-group {
+  background-color: #222 !important;
+  color: fff !important;
+}
+.list-group-item {
+  background-color: #222 !important;
+  color: fff !important;
+}

src/main/resources/static/css/general.css

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+#page-container {
+    min-height: 100vh;
+    display: flex;
+    flex-direction: column;
+}
+
+#content-wrap {
+    flex: 1;
+}
+
+#footer {
+    bottom: 0;
+    width: 100%;
+}
+
+html[lang-direction=ltr] * {
+    direction: ltr;
+}
+
+html[lang-direction=rtl] * {
+    direction: rtl;
+    text-align: right;
+}