Blazot provider improvements.

[ElliottBrand]

Fixed

• Fixed issue with content timestamp preventing transmission from being added to database table.

Changed

• Added target attribute to text link, so link will open in new window instead of redirecting app.
• Changed Hashtag Regex to a more simplified version that does a better job in situations where the # symbol immediately follows something like ">" (i.e. the hashtag starts a new line and follows <br/>).
• Added unit tests to help ensure some HTML Encoded strings aren't mistaken as hashtags.