Text updates and Return Flight Prompt revisited

Updated various texts around the site to be more descriptive.
In particular the older Home Page did not give a complete summary of Impulsifly. We know most visitors wouldn't even notice there were words on the home page :) But we would like to give good information to those who happen to cast a glance (it's our 2 second pitch).

Another area that got a major revamp is the faq section. We have added alot of good information (and a huge thankyou for asking lots of good questions!)

Finally, we revisited the prompt that informs users how to bring up return flights. The old text prompt was too dissociated from the data table, so we have brought it down to fill up the space in the corner of the table.