Ability to add files from the drive toolbar

Fix CSS issues with the different toolbars
Translate the backup URL button alert

customize.dist/src/less/toolbar.less

@@ -28,7 +28,6 @@
 
     font: normal normal normal 12px Arial,Helvetica,Tahoma,Verdana,Sans-Serif;
     color: #000;
-    display: inline-block;
     width: 100%;
     z-index: 9001;
 
@@ -38,11 +37,9 @@
 
     .cryptpad-lag {
         box-sizing: content-box;
-        vertical-align: top;
         height: 16px;
         width: 16px;
         display: inline-block;
-        margin: 2px 0px;
         padding: 5px;
         div {
             margin: auto;
@@ -62,7 +59,7 @@
         height: 26px;
         padding-right: 5px;
         padding-left: 5px;
-        margin: 2px;
+        margin: 3px 2px;
     }
 
     button {