Without this, a forward slash in the title creates a new directory
in the password-store. This replaces forward slashes with dashes.

This patch removes several special characters while attempting to preserve
as much meaning in the filename as possible. These changes are made to the
KeepassX title before it is used as a file password store filename:

   - Spaces between words in file names are replaced with camelCasing.
   - The characters \ | ( ) are each replaced with a hyphen.
   - Trailing hypens are removed.
   - @ is replaced with "At"
   - ' is removed

Import passwords as multiline entries with password in the first
line. Rest contains following data if they exist in the entry element
of the xml file:

- username
- url
- comment