Organise pictos icons

services/web/public/stylesheets/less/editor.less

@@ -98,22 +98,22 @@ body.editor {
 		height: 40px;
 	}
 	a.code-tab {
-		background-image: url(/img/icons/16/code.png);
+		background-image: url(/img/pictos/code.png);
 	}
 	a.history-tab {
-		background-image: url(/img/icons/16/history.png);
+		background-image: url(/img/pictos/history.png);
 	}
 	a.settings-tab, a.account-settings-tab {
-		background-image: url(/img/icons/16/settings.png);
+		background-image: url(/img/pictos/settings.png);
 	}
 	a.collaborators-tab {
-		background-image: url(/img/icons/16/collaborators.png);
+		background-image: url(/img/pictos/collaborators.png);
 	}
 	a.project-list-tab {
-		background-image: url(/img/icons/16/projects.png);
+		background-image: url(/img/pictos/projects.png);
 	}
 	a.subscription-tab {
-		background-image: url(/img/icons/16/subscription.png);
+		background-image: url(/img/pictos/subscription.png);
 	}
 
 	#toolbar-footer {
@@ -270,7 +270,7 @@ body.editor {
 		}
 		.not-compiled-yet-message {
 			padding: 9px;
-			background: url(/img/arrow-up.png) 20px 7px no-repeat;
+			background: url(/img/silk/arrow-up.png) 20px 7px no-repeat;
 			padding-left: 43px;
 			font-size: 16px;
 		}