Try to load nuvolaplayer fallback icon

Signed-off-by: Jiří Janoušek <janousek.jiri@gmail.com>
Web app dirname can differ from web app id

Web apps will be maintained in separate repositories,
so the dirname can be e.g. nuvola-app-googleplay.

Signed-off-by: Jiří Janoušek <janousek.jiri@gmail.com>
Log app launcher command

Signed-off-by: Jiří Janoušek <janousek.jiri@gmail.com>
Support loading of apps with non-id dirnames

Web apps will be maintained in separate repositories,
so the dirname can be e.g. nuvola-app-googleplay.

Signed-off-by: Jiří Janoušek <janousek.jiri@gmail.com>
Remove web apps

Will be maintained in separate repositories.

Signed-off-by: Jiří Janoušek <janousek.jiri@gmail.com>