fixing error on admin page when there are no covers in settings array
removing notice on admin page
Adding refresh buttons for updating well types and sources
adding default cover settings for well sources
implementing default covers taken according to first source, then materialtype of the record
code cleanup
removing code for retriving DLB Vejle covers (there remains no source for covers from that) + remove code meant for plugin functionality
fixing wrong source url assignment in mtype check
Ensure support for additional search modules
adding null check when fetching remote image urls
Added default unkown value to classes on ting object div wrapper
Merge branch '7.x-1.x' of github.com:vejlebib/ting_covers_plus into 7.x-1.x

Added defaults
Added default unkown value to classes on ting object div wrapper
Added default unkown value to classes on ting object div wrapper
DDBEASY-149 - Integrate null covers.
DDBEASY-149 - Fixes after CR.
Merge branch 'DDBEASY-149' into develop
Hot fix for admin page.
Hot fix, for ting covers plus configuration form submit.
DDBEASY 149 - Fixes for default images.