Add ability to export database as HTML for printing

src/core/Group.cpp

@@ -257,9 +257,9 @@ Entry* Group::lastTopVisibleEntry() const
     return m_lastTopVisibleEntry;
 }
 
-bool Group::isRecycled()
+bool Group::isRecycled() const
 {
-    Group* group = this;
+    auto group = this;
     if (!group->database()) {
         return false;
     }

src/core/Group.h

@@ -102,7 +102,7 @@ public:
     bool resolveAutoTypeEnabled() const;
     Entry* lastTopVisibleEntry() const;
     bool isExpired() const;
-    bool isRecycled();
+    bool isRecycled() const;
     CustomData* customData();
     const CustomData* customData() const;