9-14-2016 Design Updates
* Color refinements
* Smaller Header
* Ultra Dense Layout
* New CSS Tag to help with new table based approch, needed to float left when at a post view
* Default notice for new users
See merge request !2
added position to advertisements. with it, one can choose to either show an horizontal add only at top, bottom or both.
removed can_see_ads check from AdvertisementsHelper::print_advertisement() because it's already checked before calling it.
horizontal-bottom ads in post#index are centered.
removed "Reset hit count" checkbox in ads#edit.
Width and Height in ads form are now "number" fields.
Width and Height must now be set also for "Html" ads.
made ads#show a little nicer.
ads#create and ads#update redirect to ads#index if success.
some other related changes.
made ad#show a little nicer
added two new ad spots, bottom of post#index and post#show.
spots can be selectively activated in the booru config. by default,
only original spots are active.
