KeePass 1.31

# New Features:
- The quick search box (in the toolbar of the main window) now supports searching using a regular expression; in order to indicate that the search text is a regular expression, enclose it in '//'; for example, performing a quick search for '//Michael|Adam//' shows all entries containing 'Michael' or 'Adam'.
- Added per-user Start Menu Internet Application detection.
- HTML export/printing: long field names are hyphenated now, long field data now breaks and wraps onto the next line, and passwords are rendered using a monospace font.
# Improvements:
- When searching using a regular expression, for a match the expression now must occur somewhere in the entry data; in order to enforce that a match occurs only at the start or at the end of the data, use '^' or '$'.
- Simple text boxes now convert rich text immediately.
- When minimizing the main window to tray, the active control now loses the focus, and the focus is restored when restoring the window.
- Added time limit for finding repetitions during a password quality estimation.
- The 'About' dialog now indicates whether the current build is a development snapshot.
- Changed code signing certificate.
- Upgraded installer.
- Various UI text improvements.
- Various code optimizations.