error updating project on berkeley instance

I was just looking to see if any berkeley projects had been added and there was just one element with a missing key - I tried to add the key 'url' but got this error:

```
2016-10-12T13:50:01.288296+00:00 app[web.1]: Rendered projects/_form.html.haml (25.9ms)
2016-10-12T13:50:01.288494+00:00 app[web.1]: Rendered projects/edit.html.haml within layouts/application (26.4ms)
2016-10-12T13:50:01.289306+00:00 app[web.1]: Completed 200 OK in 37ms (Views: 13.2ms | ActiveRecord: 18.6ms)
2016-10-12T13:50:34.046148+00:00 app[web.1]: Started PATCH "/projects/3" for 86.145.234.60 at 2016-10-12 13:50:34 +0000
2016-10-12T13:50:34.053293+00:00 app[web.1]: Processing by ProjectsController#update as HTML
2016-10-12T13:50:34.053442+00:00 app[web.1]: Parameters: {"utf8"=>"✓", "authenticity_token"=>"RMlb/xUnW6vt5tWL3lP8/BJhYKGJFe/PAw+JM1VkvyOzLLWAWQ6S2Se7WVWeM7tm6UBa9Dxg4BV1P1DWWz3d0A==", "project"=>{"name"=>"IPSR Mosaic", "configs_attributes"=>{"0"=>{"metric_name"=>"code_climate", "new"=>["", ""], "id"=>"11"}, "1"=>{"metric_name"=>"github", "options"=>["https://github.com/Pojostick/ipsr-mosaic"], "new"=>["url", "https://github.com/Pojostick/ipsr-mosaic"], "id"=>"12"}, "2"=>{"metric_name"=>"slack", "new"=>["", ""], "id"=>"13"}, "3"=>{"metric_name"=>"pivotal_tracker", "new"=>["", ""], "id"=>"14"}, "4"=>{"metric_name"=>"slack_trends", "new"=>["", ""], "id"=>"15"}}}, "commit"=>"Update Project", "id"=>"3"}
2016-10-12T13:50:34.136320+00:00 app[web.1]: Project Load (7.1ms) SELECT "projects".* FROM "projects" WHERE "projects"."id" = $1 LIMIT 1 [["id", 3]]
2016-10-12T13:50:34.140387+00:00 app[web.1]: Config Load (2.1ms) SELECT "configs".* FROM "configs" WHERE "configs"."project_id" IN (3)
2016-10-12T13:50:34.223553+00:00 app[web.1]: Completed 500 Internal Server Error in 170ms (ActiveRecord: 9.2ms)
2016-10-12T13:50:34.224612+00:00 app[web.1]:
2016-10-12T13:50:34.224615+00:00 app[web.1]: NoMethodError (undefined method `merge!' for ["https://github.com/Pojostick/ipsr-mosaic"]:Array):
2016-10-12T13:50:34.224615+00:00 app[web.1]: app/controllers/projects_controller.rb:86:in `block in project_params'
2016-10-12T13:50:34.224617+00:00 app[web.1]: app/controllers/projects_controller.rb:83:in `project_params'
2016-10-12T13:50:34.224617+00:00 app[web.1]: app/controllers/projects_controller.rb:47:in `update'
2016-10-12T13:50:34.224618+00:00 app[web.1]:
2016-10-12T13:50:34.224618+00:00 app[web.1]:
```