Project pages

[dragon-fire-fly]

Relates to Issue #40

• Add a project edit form
• Display form in template and link to view
• Add custom validation for project title (no duplicate names, no profanities)
• Add custom messages to display the outcome to the user (and specify what the problem was, if known)
• Add delete project view and button in template

• Relates to Issue #42

• Add form and view for adding images
• Add delete buttons and connect to delete url and view