* Fix incorrect formatting in admin/configs/show.html.erb
* Only render SiteConfig.tagline if it exists
* Fix typo in _signup_modal.html.erb
* Remove tagline from VerifySetupCompleted::MANDATORY_CONFIGS
* Improve signup_modal tagline specs
* Tiny fixes to address @citizen428's comments
* Add community_member_description, tagline and mascot_image_url to SiteConfig
* extra space
* Add mascot_image_description field to SiteConfig
* Fix test