- Supported pages: landing, offline, thank-you and other

 * Collapse Department into Staff tab.
 * Add a new 'Manage' tab - home for managing items, lists..etc.
 * Collapse Help Topics into Manage tab.
 * Move SLA and API from Settings to Manage tab.

This will help distinguish between the knowledgebase part which encompasses
FAQ's and canned responses, and the FAQ part which contains the articles
detailing frequently-asked-questions.

changing ticket create/status bottons on client landing page, redoing navbar shadow with css, adding kb icons