Reverted 'old' tabs appearance for GTK3; slight improvementsto xresources theme

0.7.1

reverted old tabs' appearance for gtk3 (again)

xresources theme; new svg icons from upstream

0.7

fix(colors: xresources): menu_bg

synced with upstream

• upstream: svg assets;
• small script refactoring;
• returned scrollbar buttons.

GTK 3.14

• merged with upstream (GTK 3.14 support);
• fixed selection fg;
• added few color presets.

Reverted 'old' tabs appearance

Merge pull request #7 from actionless/old-tabs

reverted 'old' tabs appearance

Synced with upstream

GTK3 appearance should be better know (i hope:) )

Added 'random' colorscheme

colorschemes: added 'random'