Merge pull request #572 from ktopolski/gh-552

Gh #552
for user that does not have fee plan #552
update Gemfile.lock #552
remove silent-postgres to clear the silence method warning
Merge pull request #573 from oscurrency/silence

removing the silent-postgres gem
Fixed echoes from rebasing - typos in rails_admin
Added stripe to gemfile.
Stripe settings & custom helper - stripe include tag for including stripe.js only where we need it
Creating stripe_id from credit card data #453
If a user with a recurring monetary fee (monthly or annually) does not have a valid credit card on file then they should be forced to enter one before regaining access to the system. #453
User accounts should have a 'requires credit card' flag, defaults to true, can only be changed by admin. - fix #453
Users with a plan that contains a monetary signup or periodically recurring fee must enter a credit card at signup. Other users don't have to. - fix #453
If a user without a valid credit card on file who is on a plan that charges monetary transaction fees tries to make a purchase (clicks ‘buy now’ on offer page) then they should be redirected to a page where they can enter their credit card details. After submitting their cc details, they should be redirected back to the offer page to retry. fix #453
Task for billing credit cards at the end of week - fix #453
Unfortunately rufus scheduler can't recognize cron's 'W', so different method has to be used.
weekly stripe mockup
CSS class to host horizontal categories
moved categories to the bottom
containers with style for horizontal categories
Outputting - horizontal categories from helper method