Added compilation of templates in ./custom/brand/tpl/**/*.html

This allows templates compiled from there to overwrite templates compiled from ./tpl/**/*.html

Also found and corrected contact email branding and an issue that had caused some parts of the about view to not show even on the mail released app.
Merge pull request #328 from SpiderOak/brand-templates

Added compilation of templates in ./custom/brand/tpl/**/*.html