[profile] Support multiple sound.level values.

profile.ini is now configured with for example:

sound-levels = system.sound.level;foo.sound.level
system.sound.level = 0;50;75;100
foo.sound.level = 0;30;60;90
[settings] Update default config for profile plugin.
Merge pull request #33 from jusa/dev

Support multiple sound.level values.