add join path command

css/common/bootstrap.less

@@ -202,4 +202,22 @@ hr {
         background: lighten(#707781, 15%);
         pointer-events: none;
     }
+}
+
+@media screen and (min-width:1200px) and (max-width:1400px){
+    .command-groups {
+        >li,
+        >li[data-theme="ico"] {
+            padding: 0 8px;
+        }
+    }
+}
+
+@media screen and (max-width:1200px){
+    .command-groups {
+        >li,
+        >li[data-theme="ico"] {
+            padding: 0 4px;
+        }
+    }
 }

css/common/ico.less

@@ -162,4 +162,20 @@
 
 .i-mirror {
     .i-ico('\e012');
+}
+
+.i-splitshapes {
+    .i-ico('\e024');
+}
+
+.i-joinshapes {
+    .i-ico('\e025');
+}
+
+.i-intersectshapes {
+    .i-ico('\e026');
+}
+
+.i-tangencyshapes {
+    .i-ico('\e027');
 }