Switch to side-by-side view

--- a/dirbrowser/dirbrowser.ui
+++ b/dirbrowser/dirbrowser.ui
@@ -14,6 +14,12 @@
    <string>Form</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout_2">
+   <property name="spacing">
+    <number>0</number>
+   </property>
+   <property name="margin">
+    <number>0</number>
+   </property>
    <item>
     <layout class="QVBoxLayout" name="verticalLayout">
      <property name="spacing">