Carlos Garcia Campos authored Feb 04, 2017 and Carlos Garcia Campos committed Feb 05, 2017

Make org.gnome.Epiphany.web schema relocatable to be used by web apps.
Settings in org.gnome.Epiphany.web schema are now per web app, allowing
users to have different settings in the main epiphany instance and in
every web applications installed. Newly created web apps inherit the
settings from the main instance. To make this possible I also had to
move some of the settings:

 - user-agent, remember-passwords and enable-smooth-scrolling has been
   moved from the main schema to web. The profile migrator will copy the
   values from the main schema to the web one. Settings are not actually
   moved, but copied marking the old ones as deprecated.

 - adblock-filters has been moved from web to main schema, because it's
   actually shared, web apps use the default profile filters. This is
   not migrated because it's very recent setting and probably everybody
   is using the default value anyway since it's not exposed in the UI
   yet.

When the profile migrator is run for the main ephy instance, we simply
copy the values of the deprecated settings to its new location. When
it's run for a web app we copy the settings from the main profile. If
the migrator was not run for the main profile yet, we use the deprecated
values instead. This way web apps will be ensured to have the same
settings.
The app menu for web applications includes now the preferences item to
show the preferences dialog. The dialog is the same as the main one,
but with with the global options hidden.
This patch also removes ephy_settings_ensure_schema_for_path() and
relocatable schemas are configured automatically based on the current
profile dir, making it less error prone.