UI: logo update

* (addresses #600)
records: updates templates with 'load more' option

* adds ‘load more’ option in files
* display 5 files at start, then adding other 5
* removes author list from templates
* (addresses #684)
homepage: styling update son homepage

* adds ability to scroll in small screens
* enters experiment images
* makes button smaller in narrow screens
records: fixes bug for recordss with < 5 files
records: updates 'Characteristics' section

* makes font normal for title and light bold for info
UI: removes "DEMO" image
homepage: styling fix for images
UI: updates styling in 404 pages
homepage: updates description boxes

* (closes #695)