Consolidated 'Part' app views

- Improved templating
- Part tree open/close status stored to session

InvenTree/static/css/inventree.css

@@ -47,7 +47,7 @@
     margin-right: 50px;
     margin-left: 50px;
     width: 100%;
-    transition: 0.5s;
+    transition: 0.1s;
 }
 
 .body {
@@ -88,7 +88,7 @@
     position: fixed; /* Stay in place */
     background-color: #fff; /* Black*/
     overflow-x: hidden; /* Disable horizontal scroll */
-    transition: 0.5s; /* 0.5 second transition effect to slide in the sidenav */
+    transition: 0.1s; /* 0.5 second transition effect to slide in the sidenav */
 }
 
 .wrapper {

InvenTree/static/script/sidenav.js

@@ -1,9 +1,52 @@
+function loadTree(url, tree, data) {
+
+    $.ajax({
+        url: url,
+        type: 'get',
+        dataType: 'json',
+        data: data,
+        success: function (response) {
+            if (response.tree) {
+                $(tree).treeview({
+                    data: response.tree,
+                    enableLinks: true
+                });
+            }
+        },
+        error: function (xhr, ajaxOptions, thrownError) {
+            //TODO
+        }
+    });
+}
+
 function openSideNav() {
     document.getElementById("sidenav").style.width = "250px";
     document.getElementById("inventree-content").style.marginLeft = "270px";
+
+    sessionStorage.setItem('inventree-sidenav-state', 'open');
 }
 
 function closeSideNav() {
     document.getElementById("sidenav").style.width = "0";
     document.getElementById("inventree-content").style.marginLeft = "50px";
+
+    sessionStorage.setItem('inventree-sidenav-state', 'closed');
+}
+
+function toggleSideNav(nav) {
+    if ($(nav).width() == 0) {
+        openSideNav();
+    }
+    else {
+        closeSideNav();
+    }
+}
+
+function initSideNav() {
+    if (sessionStorage.getItem("inventree-sidenav-state") && sessionStorage.getItem('inventree-sidenav-state') == 'open') {
+        openSideNav();
+    }
+    else {
+        closeSideNav();
+    }
 }

InvenTree/static/script/trees.js

@@ -1,20 +0,0 @@
-function loadTree(url, tree, data) {
-
-    $.ajax({
-        url: url,
-        type: 'get',
-        dataType: 'json',
-        data: data,
-        success: function (response) {
-            if (response.tree) {
-                $(tree).treeview({
-                    data: response.tree,
-                    enableLinks: true
-                });
-            }
-        },
-        error: function (xhr, ajaxOptions, thrownError) {
-            //TODO
-        }
-    });
-}