Bug 1074670 - Implement the Hello NotificationView's button (e.g. retry). r=pkerr

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extra : rebase_source : 9c712ce0b135826acb0ff48b3f7ef08e7b64c0b2
Bug 1062127 - Style the in-content preference dialogs. r=dao

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rename : browser/themes/shared/incontentprefs/preferences.css => browser/themes/shared/incontentprefs/preferences.inc.css
Bug 1022579 - Preferences: Switch help and dropdown glyphs to SVG. r=jaws
Bug 1096921 - Fix typo in CategoryManagerInterposition.methods.deleteCategoryEntry. r=mconley