Bug 791475 - Android updater notification should provide more information like progress. r=snorp
Bug 905226 - Identify custom JSON MIME-types as text. r=vporof

MIME types that can't be identified as textual are base64 encoded before
being shown in the Network Monitor tab of the developer tools. This text
detection wasn't identifying "custom" JSON MIME-types like
"application/x-bigcorp-api-json" as being JSON, and consequently they were
shown in a rather unhelpful base64 form.

This patch extends and liberalizes the isTextMimeType method to identify
these forms correctly.
Bug 913014 - Double clicking on a computed style toggles the matched selectors. r=harth
Bug 917863 - Add XUL context menu back into rule and computed views. r=jwalker
Bug 918588 - Properly support off after once with EventEmitter. r=mratcliffe