Added file icon to attachments in attachment list
Added key property to Project that is lowercase version of Project.name in order to sort projects in project lists
Project lists in Projects menu and in all-projects page ordered by key
Function tagify adapts string so that it is guaranteed to pass tag validation rule by transforming to lower case and removing illegal characters
About menu links to about, features, tag manual, and all projects
Add home toolbar to all user profile related pages; removed dead code
tagify tag name on creation and edit
layout
Add user-specific project list to navbar