Jonas Jenwald 610df45bad Prevent external links from "replacing" the viewer when it's embedded (bug 976541)
Fixes https://bugzilla.mozilla.org/show_bug.cgi?id=976541.

This patch also adds a `externalLinkTarget` preference, to make the behaviour user configurable.
2015-10-13 22:18:08 +02:00
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2015-02-17 11:07:37 -05:00
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