Improve usability of generate password functionality.

	* res/layout/generate_password.xml: Add sensible default values.
	Move password field and generate button to top for visibility.
	Make text input single line and password field monospaced.

	* src/com/keepassdroid/GeneratePasswordActivity.java (onCreate): Pre
	populate the generated password.
	(fillPassword): Factor out onClick code so we can call it from onCreate.
Merge remote-tracking branch 'krid/generate_password_improvements'
Credit password generator improvements.
Cleanup imports.
Beta version bump.