Update installer to remove spurious 'Install complete' dialog.

Jira issue: WP-824

Also added new icon so as to avoid confusion between the installer
and the webinos runtime.
Merge pull request #500 from paddybyers/android-installer-bugfix

Update installer to remove spurious 'Install complete' dialog.
Merge pull request #483 from habibvirji/WP-777-two-pzp-name-handling

Wp 777 two pzp name handling
Changes in configuration storage and PZP certificate generation

 Configuration has generic function to store data in files.
 PZP generates 3 sets of certificates PZPCA (at enrollment signed by PZH), PZP connection certificate and PZP web socket certificate.

Jira Issue: WP-39
PZP certificate storage in the browser database using certutil and pk12util

PZP now runs on secure web socket connection and uses mutual authentication. Certificates are stored in chrome and mozilla database currently.

Jira Issue: WP-39
Removed storage in the browser database functionality

Storing in browser database will not scale on different platforms.
The adverse effect of this solution will be browser not mutual authenticated.
It does not stop PZP from using secure websocket.

Jira Issue: WP-39
Merge issues

Jira Issue: WP-39
Changes after WP-718 merge

Jira Issue: WP-39
Travis build fix

Jira Issue: WP-39