[BZ] genome-keyring unnecessarily exposes all saved passwords

Issue

Description of problem:
genome-keyring unnecessarily exposes all saved passwords without prompting for the users password prior to access.

Version-Release number of selected component (if applicable):
gnome-keyring-2.28.2-8.el6_3.x86_64

How reproducible:
Always

Steps to Reproduce:
1. Boot into RHEL 6 gnome
2. Have previously saved passwords for webpages (in my case google chrome)
3. Click applications > passwords and encrypted keys
4. Click the dropdown menu passwords
5. Double click a saved URL
6. Click the arrow next to password
7. Click "show password"

Actual results:
Any encrypted password can be easily viewed and recorded.

Expected results:
Prompt the user for their login password to allow access to this information.

Additional info:
If a user leaves a session open, someone can easily follow this path and steal every saved password.