APIQ CMS v1.1.0

• [fixed] fix according to guide from devise
• [changed] change initializing template manager in before_initialize block
• [changed] update carrierwave dependency
• [fixed] Snippet should not be templatable as well
• [added] ability to edit/update users by admin - closes #24
• [added] add Ctrl-S hotkey for updating Templates, Pages, Snippets or Assets - closes #25
• [changed] display errors on failed assets uploads
• [added] add active state to sidebar menu items
• [changed] upgrade Angular to 1.6 - closes #22