Summary:
The about:crashes page is being updated (bug 1463515). To facilitate these changes,
this patch changes the about:crashes page to use Fluent for localization instead of the old systems.
This also includes a script to migrate strings from the old .DTD and .properties files
to the new .ftl one.
Test Plan:
1. build Firefox with the changes
2. run Firefox
3. go to the about:crashes page
4. expect nothing to be different
This extension: https://github.com/rhelmer/webext-experiment-crashme can be used to
add local crash reports for verifying the different states of the about:crashes page.
Reviewers: flod, Pike, jchen, snorp
Reviewed By: flod, Pike, jchen, snorp
Subscribers: nalexander, reviewbot
Bug #: 1476034
Differential Revision: https://phabricator.services.mozilla.com/D2225