[KPhotoAlbum] Visual Updates for KPA

[Andreas Neustifter]

[DISCLAIMER: The visual looks of a program are a highly subjective
matter, I'm presenting my views as basis for discussion and not as the
only valid solution to the problems I see.]

Hi all!

Okay, this is the last patch for a while (well, its actually five patches...).

I do not know if this is the Ubuntu-Qt or if this is a general problem
but there where some visual glitches in KPA that annoyed me to no end.
Since its easier to talk this in pictures I have made some screenshots
that are split between the old version (left) and the new version
(right):
http://flickr.com/gp/astifter/L2Bh85/

To sum up the glitches: most of the icons in the views had white
backgrounds, the status bar was white and the treeview too. This was
inconsistent with the grey background everywhere else so I made
changes such that everything is either the default (menu bar) grey or
the user configured background in the thumbnail view.
https://github.com/astifter/kphotoalbum-fork/commit/2a203b7d5d30608ba6a5740a91b9f19f555041a2
https://github.com/astifter/kphotoalbum-fork/commit/534001b64764c846f9fe4878a49fddf1972c39d8

Also some of the settings dialogs where a untidy and not properly
aligned, I realigned everything and put proper headers in. Also I
pulled all settings that control "what new files are loaded" into one
dialogue pane and left the settings for "what information is loaded
from a file" in the first dialogue pane.
https://github.com/astifter/kphotoalbum-fork/commit/b5628fe2509e7b5719e676e931ac081035fc169e
https://github.com/astifter/kphotoalbum-fork/commit/4e2f52da5fc896a7973543a94b6388754ecd2399

Finally the main screen has a too broad border and the line separating
the histogram from the status bar is way to dark. I fixed that too.
https://github.com/astifter/kphotoalbum-fork/commit/b6655787dd610603d3cc20c9383d9a3065e7f797

What do you think of the slightly tidier look?

Andi