Carousel and Cards

[ViliamVadocz]

New carousel using bootstrap

Picture sizes (can be changed if needed):

• Large images are 2800 x 840
• Small (mobile) images are 1120 x 840

Naming scheme for images:

• If the desktop version is carousel_test_image.jpg, the mobile version would be carousel_test_image_mobile.jpg
• This scheme is mandatory for the javascript picture switching to work.

Other comments

The carousel slide text only shows up on the mobile version (as per design pictures). Personally I would either enable it for both or for neither viewport, so that the users don't see different content when viewing on different devices.

[ViliamVadocz]

Technically my PR is built following Ado's changes which have not yet been merged (#6 ). That PR should either merged or closed before this one.