Handle IP Address in uploaded URI - URL indicator

A valid URL can contain an IP address instead of a domain. Rather than displaying a "no_tld_found_error" message, CRITs should parse out the IP address, add it as an IP top-level object, and form the relationship.
Use urlparse to get Domain/IP from URI - URL Indicator
Fix display of no_tld_found_error in New Indicator dialog
Notify Indicator was added when Domain/IP error occurs
Merge pull request #141 from brlogan/patch-7

Handle IP Address in uploaded URI - URL Indicator