qutebrowser: Make use of dotter for dir structure

Since we now use dotter we can simplify the dir structure for
qutebrowser a lot. Everything dot-filed earlier can now reside
in simple directories called config (for ~/.config/qutebrowser),
data (for ~/.local/share/qutebrowser), and scripts
(for ~/.local/bin) files.

qutebrowser/data/userscripts/pagetopdf.sh

@@ -0,0 +1,10 @@
+#! /usr/bin/bash
+# Download current page as pdf file
+
+# use title of current page / selected text as filename
+filename=${QUTE_SELECTED_TEXT:-$QUTE_TITLE}
+# revert to default name if nothing else is set; remove special chars
+filename=$(echo "${filename:-downloaded.pdf}" | sed 's/[<>,/]/_/g')
+
+# print to pdf
+echo "print --pdf '$QUTE_DOWNLOAD_DIR/${1:-$filename}.pdf'" >>"$QUTE_FIFO"