KeePass 1.25

# New Features:
* Added option to show the tray icon only if the main window has been sent to the tray.
* The caret position in a secure edit control is now preserved when unhiding and hiding the content.
* When starting KeePass for the first time, it asks whether to enable the automatic update check or not (if not enabled already).
* KeePass now shows an error message when the user accidentally attempts to use a database file as key file.
* When holding Alt while double-clicking onto a notes field in the main entry list, KeePass now copies the displayed cell text instead of the raw notes to the clipboard.
# Improvements:
* {GOOGLECHROME} placeholder: updated detection code to also support the latest versions of Chrome.
* Enhanced user switch detection.
* Moved quick search options to a separate category.
* Improved update check.
* The 'No updates available' message is not shown in the status bar anymore (updates and errors are shown).
* Unified clipboard methods.
* Changed naming of translation files.
* Upgraded installer.
* Upgraded to Boost libraries version 1.52.0.
* Various code optimizations.
* Minor other improvements.