[run on Tizen] Add note about --fullscreen option for xwalk-launcher
Add page about remote debugging to 'getting started'

Also moved other references to remote debugging to this main page;
then add links to the central debugging pages from the other
tutorials.

Fixes https://crosswalk-project.org/jira/browse/XWALK-483
Merge pull request #136 from crosswalk-project/remote-debugging-483

Add page about remote debugging to 'getting started'
[manifest] Update for xwalk_launch_screen
[manifest] Crosswalk 8 on Android supports start_url

app.launch.local_path is deprecated on Crosswalk Android 8+
[manifest] csp replaces content_security_policy
[manifest] Make room for orientation page
[manifest] Make field-description page titles consistent
[manifest] Ensure fields are correct for Crosswalk 8