feat(desktop): improve widget edit mode UX and allow free dragging

# Conflicts:
#	install.sh

src/styles/widgets/desktop-widgets.css

@@ -1,5 +1,5 @@
 #weather-container {
-  margin: 5px 5px 20px 5px;
+  margin: 0px;
   min-width: 170px;
   min-height: 170px;
   border-radius: apply(radius-lg);
@@ -88,7 +88,7 @@
 /* Calendar Widget */
 #calendar-box-widget {
   background: @glass-widget;
-  margin: 5px 20px 20px 10px;
+  margin: 0px;
   min-width: 170px;
   min-height: 170px;
   border-radius: apply(radius-lg);
@@ -192,7 +192,7 @@
 
 #date-container {
   background: @glass-widget;
-  margin: 5px 10px 20px 5px;
+  margin: 0px;
   min-width: 170px;
   min-height: 170px;
   border-radius: apply(radius-lg);
@@ -202,7 +202,7 @@
 /* System Info Widget CSS  */
 #info-box-widget {
   background: @glass-widget;
-  margin: 5px 5px 5px 5px;
+  margin: 0px;
   min-width: 170px;
   min-height: 170px;
   border-radius: apply(radius-lg);
@@ -245,3 +245,19 @@
   font-size: apply(font-base);
   font-weight: 600;
 }
+
+/* Desktop widget edit mode & DnD */
+.edit-mode {
+  border: 2px dashed @glass-accent;
+  border-radius: apply(radius-lg);
+  transition: all apply(transition-fast);
+}
+
+.edit-mode:hover {
+  border-color: @glass-text;
+  background-color: alpha(@glass-accent, 0.08);
+}
+
+.dragging {
+  opacity: 0.5;
+}