Remove some double margins.

src/gui/DatabaseWidget.cpp

@@ -86,6 +86,7 @@ DatabaseWidget::DatabaseWidget(Database* db, QWidget* parent)
     m_searchWidget->hide();
 
     QVBoxLayout* vLayout = new QVBoxLayout(rightHandSideWidget);
+    vLayout->setMargin(0);
     vLayout->addWidget(m_searchWidget);
     vLayout->addWidget(m_entryView);
 

src/gui/MainWindow.ui

@@ -15,6 +15,9 @@
   </property>
   <widget class="QWidget" name="centralwidget">
    <layout class="QVBoxLayout" name="verticalLayout">
+    <property name="margin">
+     <number>0</number>
+    </property>
     <item>
      <widget class="QStackedWidget" name="stackedWidget">
       <property name="currentIndex">
@@ -22,6 +25,9 @@
       </property>
       <widget class="QWidget" name="pageDatabase">
        <layout class="QVBoxLayout" name="verticalLayout_2">
+        <property name="margin">
+         <number>0</number>
+        </property>
         <item>
          <widget class="DatabaseTabWidget" name="tabWidget">
           <property name="currentIndex">
@@ -39,6 +45,9 @@
       </widget>
       <widget class="QWidget" name="pageSettings">
        <layout class="QVBoxLayout" name="verticalLayout_3">
+        <property name="margin">
+         <number>0</number>
+        </property>
         <item>
          <widget class="SettingsWidget" name="settingsWidget" native="true"/>
         </item>

src/gui/SearchWidget.ui

@@ -11,6 +11,9 @@
    </rect>
   </property>
   <layout class="QHBoxLayout" name="horizontalLayout">
+   <property name="margin">
+    <number>0</number>
+   </property>
    <item>
     <widget class="QToolButton" name="closeSearchButton">
      <property name="text">