removed external icons, added pagination

all external icons have been removed, and the home page jumbotron has
pagination

also made the jumbotron work with different images as backgrounds
fixed a pagination bug at res <480px

pages wouldn’t click, now they do

removed excess html on images.
missed an external icon on log in

replaced it
Merge pull request #49 from tsadykhov/image-edits

Image edits