Added action "Copy URL to Clipboard" (closes #1944021)

Fixed: Unnamed Database saved as ".kdb" (closes #2109972, #2118340)
Fixed: Date of Modification isn't updated (closes #2108658, #2121768)
Fixed and improved the initialization of the fallback random number source (closes #2091784)
Don't clear clipboard if "Clear clipboard after" is set to 0
Try to clear Klipper history when clearing clipboard

git-svn-id: https://svn.code.sf.net/p/keepassx/code/trunk@220 b624d157-de02-0410-bad0-e51aec6abb33

src/res/default-detailview.html

@@ -41,7 +41,7 @@
       <td width="10%" class="fieldname">Password:</td>
       <td width="40%" class="fieldvalue">%password%</td>
       <td width="10%" class="fieldname">Modification:</td>
-      <td width="40%" class="fieldvalue">%creation%</td>
+      <td width="40%" class="fieldvalue">%lastmod%</td>
     </tr>
     <tr>
       <td width="10%" class="fieldname">Attachment:</td>