pidgin: Fix -Wpointer-sign warning expected 'const guint8 *' vs 'gchar *'

Merged in default (pull request #412)

facebook: Limit received images to 10MiB

facebook: Allow sizes larger than 1MiB for received images

Merged in default (pull request #406)

remove more stray tabs

remove a stray tab

Forgot to remove the include for gtkwebview

Finish up the prefs, at least for format toggles

Initial work moving gtkprefs to talkatu

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mercurial