Ability to drag&select in the drive

www/drive/file.less

@@ -121,6 +121,16 @@ li {
     }
 }
 
+.selectedTmp {
+    border: 1px dotted #bbb;
+    background: #AAA;
+    color: #ddd;
+    margin: -1px;
+    .fa-minus-square-o, .fa-plus-square-o {
+        color: @tree-fg;
+    }
+}
+
 span {
     &.fa-folder, &.fa-folder-open {
         color: #FEDE8B;
@@ -260,6 +270,12 @@ span {
     flex: 1;
     display: flex;
     flex-flow: column;
+    position: relative;
+    .selectBox {
+        display: none;
+        background-color: rgba(100, 100, 100, 0.7);
+        position: absolute;
+    }
     &.readonly {
         background: @content-bg-ro;
     }
@@ -287,7 +303,7 @@ span {
                 /*pointer-events: none;*/
             }
             &:hover {
-                &:not(.selected) {
+                &:not(.selected, .selectedTmp) {
                     background-color: @drive-hover;
                 }
                 .name {
@@ -357,8 +373,8 @@ span {
             padding-bottom: 5px;
             max-height: 145px;
 
-            &:not(.selected) {
-                border: transparent 1px;
+            &:not(.selected):not(.selectedTmp) {
+                border: 1px solid transparent;
             }
             .name {
                 width: 100%;
@@ -384,6 +400,7 @@ span {
 
     .list {
         // Make it act as a table!
+        padding-left: 20px;
         ul {
             display: table;
             width: 100%;