Adding a port to the mysql host breaks the install

[eschnou]

When installing, if the user provides a port in the mysql server url, the install can continue but the setup is broken. See this thread: https://groups.google.com/d/topic/storytlr-discuss/UCBQqtmkbHU/discussion

Two solutions:

• Block the user from entering a host string with a port
• Parse the port and set the config.ini accordingly. Note that there is nothing provisioned in the code at this stage to handle database connection to non default ports.