Image credits:
QA_icon.svg:
-http://es.wikipedia.org/wiki/Archivo:QA_icon.svg
+https://es.wikipedia.org/wiki/Archivo:QA_icon.svg
GNU Lesser General Public License
~~helix84 (16.4.2007), Philverney (6.12.2005) David Vignoni
Gtk-media-play-ltr.svg
-http://commons.wikimedia.org/wiki/File:Gtk-media-play-ltr.svg
+https://commons.wikimedia.org/wiki/File:Gtk-media-play-ltr.svg
GNU Lesser General Public License
-http://ftp.gnome.org/pub/GNOME/sources/gnome-themes-extras/0.9/gnome-themes-extras-0.9.0.tar.gz
+https://ftp.gnome.org/pub/GNOME/sources/gnome-themes-extras/0.9/gnome-themes-extras-0.9.0.tar.gz
David Vignoni
US_states_by_total_state_tax_revenue.svg
-http://commons.wikimedia.org/wiki/File:US_states_by_total_state_tax_revenue.svg
+https://commons.wikimedia.org/wiki/File:US_states_by_total_state_tax_revenue.svg
CC BY 3.0
TastyCakes on English Wikipedia
however you feel fit, without restriction.
Animated_PNG_example_bouncing_beach_ball.png
-http://commons.wikimedia.org/wiki/File:Animated_PNG_example_bouncing_beach_ball.png (originally http://www.treebuilder.de/default.asp?file=89031.xml )
+https://commons.wikimedia.org/wiki/File:Animated_PNG_example_bouncing_beach_ball.png (originally http://www.treebuilder.de/default.asp?file=89031.xml )
Public Domain
Holger Will