Notepad++ 5.8.7

- Fix a regression bug: the notification message boxes were not modal. It can be ignored by user then cause wrong input characters.
- In order to reduce the confusion, new "Mark" tab for "Mark all" feature is made in Find/Replace dialog.
- Make "Fide what" and "Replace with" fields larger in Find/Replace dialog.
- Make message dialogs in Notepad++ translatable (in progress).
- Change user manual format from chm to html.
- Make minimalist installation available in installer.