Merge v0.0.3 to master

Added

• Brave Browser, cURL, Python's requests library
• Relay search section (#16 (closed))
• Onion service (#20 (closed))
• JS required warning (#10 (closed))
• CAPTCHA rate by Tor Browser version graph (#15 (closed))
• Fallback font (#13 (closed))
• 'N/A' as the default value for the data in the summary view (#12 (closed))
• Pie graphs for the continent, country and line graphs for TB version, browser types
• Color indicators in the list views

Changed

• Switched to using PostgreSQL
• Lots of typo fixes