Added more material design icons in place of font awesome in the note…

…book as well as the command pallete search, Notebook icon as well as filetypes icons almost complete

src/application/tabs.css

@@ -142,22 +142,25 @@
   display: inline-block;
 }
 
+.p-TabBar-WindowTabLabel {
+  margin-top: 4px;
+}
 
 .p-DockPanel-tabBar .p-TabBar-tab.p-mod-closable > .p-TabBar-tabCloseIcon {
   margin-left: 4px;
+  padding-top: 8px;
+  background-size: 16px;
+  height: 16px;
+  width: 16px;
+  background-image: url(../default-theme/icons/md/close.svg);
+  background-position: center;
+  background-repeat: no-repeat;
 }
 
 
-.p-DockPanel-tabBar .p-TabBar-tab.p-mod-closable > .p-TabBar-tabCloseIcon:before {
-  content: '\f00d';  /* close */
-  font-family: FontAwesome;
-}
-
-
-.p-DockPanel-tabBar .p-TabBar-tab.p-mod-closable.jp-mod-dirty > .p-TabBar-tabCloseIcon:before {
-  font-family: FontAwesome;
-  content: '\f111'; /* circle */
-  font-size: 10px;
+.p-DockPanel-tabBar .p-TabBar-tab.p-mod-closable.jp-mod-dirty > .p-TabBar-tabCloseIcon {
+  background-size: 12px;
+  background-image: url(../default-theme/icons/md/circle.svg);
 }
 
 

src/commandpalette/index.css

@@ -43,16 +43,18 @@
 
 
 .p-CommandPalette-wrapper::after {
-  font-family: FontAwesome;
-  content: "\f002"; /* search */
+  content: " ";
   color: white;
   background-color: var(--jp-brand-color1);
-  font-size: var(--jp-ui-icon-font-size);
-  line-height: var(--jp-private-commandpalette-search-height);
   position: absolute;
   right: 12px;
   height: 30px;
+  width: 12px;
   padding: 0px 12px;
+  background-image: url(../default-theme/icons/md/search.svg);
+  background-size: 20px;
+  background-repeat: no-repeat;
+  background-position: center;
 }
 
 .p-CommandPalette-input {

src/default-theme/icons.css

@@ -16,6 +16,10 @@
   background-image: url(icons/md/add.svg);
 }
 
+.jp-CloseIcon {
+  background-image: url(icons/md/close.svg);
+}
+
 .jp-CutIcon {
   background-image: url(icons/md/cut.svg);
 }