Change cursor theme, add plank settings

dots/plank/items/calibre-gui.dockitem

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+[PlankDockItemPreferences]
+Launcher=file:///usr/share/applications/calibre-gui.desktop

dots/plank/items/chromium-browser.dockitem

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+[PlankDockItemPreferences]
+Launcher=file:///usr/share/applications/chromium-browser.desktop

dots/plank/items/emacs25.dockitem

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+[PlankDockItemPreferences]
+Launcher=file:///usr/share/applications/emacs25.desktop

dots/plank/items/gimp.dockitem

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+[PlankDockItemPreferences]
+Launcher=file:///usr/share/applications/gimp.desktop

dots/plank/items/sakura.dockitem

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+[PlankDockItemPreferences]
+Launcher=file:///usr/share/applications/sakura.desktop

dots/plank/items/thunderbird.dockitem

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+[PlankDockItemPreferences]
+Launcher=file:///usr/share/applications/thunderbird.desktop

dots/plank/plank.ini

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+[dock1]
+icon-size=48
+show-dock-item=false
+position='left'
+dock-items=['sakura.dockitem', 'chromium-browser.dockitem', 'thunderbird.dockitem', 'emacs25.dockitem', 'gimp.dockitem', 'calibre-gui.dockitem']
+unhide-delay=0
+items-alignment='center'
+theme='Frost'
+hide-mode='intelligent'
+pinned-only=false
+auto-pinning=true
+alignment='center'
+zoom-percent=150
+hide-delay=0
+zoom-enabled=false
+monitor=''
+lock-items=false
+tooltips-enabled=true
+pressure-reveal=false
+offset=0
+current-workspace-only=false