ignore plasma side-style panels/windows

--all plasma windows that are touching a screen edge
and their thickness based on the edge they are touching is
below 96px. are NOT consider as plasma panels and are
treated like normal windows for all Latte codepaths

app/wm/abstractwindowinterface.cpp

@@ -34,6 +34,8 @@
 namespace Latte {
 namespace WindowSystem {
 
+#define MAXPLASMAPANELTHICKNESS 96
+
 AbstractWindowInterface::AbstractWindowInterface(QObject *parent)
     : QObject(parent)
 {
@@ -127,15 +129,28 @@ bool AbstractWindowInterface::isPlasmaPanel(const QRect &wGeometry) const
         return false;
     }
 
+    bool isTouchingHorizontalEdge{false};
+    bool isTouchingVerticalEdge{false};
+
     for (const auto scr : qGuiApp->screens()) {
         if (scr->geometry().contains(wGeometry.center())) {
-            if (wGeometry.y() == scr->geometry().y()
-                    || wGeometry.bottom() == scr->geometry().bottom()
-                    || wGeometry.left() == scr->geometry().left()
-                    || wGeometry.right() == scr->geometry().right()) {
-                return true;
+            if (wGeometry.y() == scr->geometry().y() || wGeometry.bottom() == scr->geometry().bottom()) {
+                isTouchingHorizontalEdge = true;
+            }
+
+            if (wGeometry.left() == scr->geometry().left() || wGeometry.right() == scr->geometry().right()) {
+                isTouchingVerticalEdge = true;
+            }
+
+            if (isTouchingVerticalEdge && isTouchingHorizontalEdge) {
+                break;
+            }
         }
     }
+
+    if ((isTouchingHorizontalEdge && wGeometry.height() < MAXPLASMAPANELTHICKNESS)
+            || (isTouchingVerticalEdge && wGeometry.width() < MAXPLASMAPANELTHICKNESS)) {
+        return true;
     }
 
     return false;