added GUI window for upcoming email details

ui/details.ui

@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>Details</class>
+ <widget class="QDialog" name="Details">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>730</width>
+    <height>467</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Mail Notifier</string>
+  </property>
+  <property name="windowIcon">
+   <iconset resource="../resources.qrc">
+    <normaloff>:/icons/mailbox_empty.png</normaloff>:/icons/mailbox_empty.png</iconset>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout_2">
+   <item>
+    <widget class="QPushButton" name="pushButton">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+     <property name="text">
+      <string>Refresh</string>
+     </property>
+     <property name="icon">
+      <iconset resource="../resources.qrc">
+       <normaloff>:/icons/check_now.png</normaloff>:/icons/check_now.png</iconset>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout">
+     <item>
+      <widget class="QTableWidget" name="tableWidget"/>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <resources>
+  <include location="../resources.qrc"/>
+ </resources>
+ <connections/>
+</ui>