[Amarok] Move Playlist Layout config from toolbar to main m

[Thomas Lübking]

I'll try to make it short ;-)

My 4¢
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a) the playlist environment needs to be improved
b) the toolbar has become a kitchen sink (unrelated to very recent changes)
c) toolbar configurability is nice, but won't prevent users from potentially 
have to recreate a sink

Analysis:
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The playlist environment contains elements of three categories:
1. Global (mode) settings (sort order, play mode, playlist layout)
2. Playlist editing (wipe, undo, redo, save)
3. Playlist navigation (show active track)

Proposal:
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Just group by category

- ABOVE the playlist:
[PLAYMODE] [spacer] [SORTING] [CLEAR sorting button] [stretch] [LAYOUT]

- BELOW the playlist:
[stretch] [WIPE] [stretch] [UNDO] [REDO] [stretch] [SAVE] [stretch]

- The "Show active track" button actually belongs to the scrollbar, esp. as it 
makes no sense unless there's one, so it should be either
	° above or below the scroller or
	° a line or icon inside the scroller (this is imho more elegant, but has 
a flaw as the slider has a minimum size, i.e. could cover the indicator 
allthough the current track is not visible - for rather long playlists)

Cheers,
Thomas

Btw (slight OT)
I'd strongly recommand to consistently place filterlines BELOW their attached 
content)
References:
This is already present for the fileview content and the way it's done in 
dolphin, gwenview, firefox, konqueror, katepart (as "find" is the closest 
match to "filter" in this context) and actually kmail is the only prominent 
exception i'm aware of atm.
In case of worries about mouse ways - that's what focus buddies were invented 
for ;-P