[Rails5] Use `safe_params` instead of `params` in `url_for` helpers

This commits replaces `params` with `safe_params` in `url_for` helpers
to resolve security issues [1] and failing specs with the

```
ArgumentError:
  Attempting to generate a URL from non-sanitized request parameters!
  An attacker can inject malicious data into the generated URL, such as
  changing the host. Whitelist and sanitize passed parameters to be secure.
```

error.

[1]: https://gitlab.com/gitlab-org/gitlab-ce/issues/45168

app/controllers/concerns/issuable_collections.rb

@@ -57,7 +57,7 @@ module IssuableCollections
     out_of_range = @issuables.current_page > total_pages # rubocop:disable Gitlab/ModuleWithInstanceVariables
 
     if out_of_range
-      redirect_to(url_for(params.merge(page: total_pages, only_path: true)))
+      redirect_to(url_for(safe_params.merge(page: total_pages, only_path: true)))
     end
 
     out_of_range

app/controllers/groups/application_controller.rb

@@ -33,6 +33,6 @@ class Groups::ApplicationController < ApplicationController
   def build_canonical_path(group)
     params[:group_id] = group.to_param
 
-    url_for(params)
+    url_for(safe_params)
   end
 end

app/controllers/projects/application_controller.rb

@@ -25,7 +25,7 @@ class Projects::ApplicationController < ApplicationController
     params[:namespace_id] = project.namespace.to_param
     params[:project_id] = project.to_param
 
-    url_for(params)
+    url_for(safe_params)
   end
 
   def repository

app/views/peek/_bar.html.haml

@@ -3,5 +3,5 @@
 #js-peek{ data: { env: Peek.env,
          request_id: Peek.request_id,
          peek_url: peek_routes.results_url,
-         profile_url: url_for(params.merge(lineprofiler: 'true')) },
+         profile_url: url_for(safe_params.merge(lineprofiler: 'true')) },
          class: Peek.env }

app/views/projects/diffs/_diffs.html.haml

@@ -8,7 +8,7 @@
   .files-changed-inner
     .inline-parallel-buttons.hidden-xs.hidden-sm
       - if !diffs_expanded? && diff_files.any? { |diff_file| diff_file.collapsed? }
-        = link_to 'Expand all', url_for(params.merge(expanded: 1, format: nil)), class: 'btn btn-default'
+        = link_to 'Expand all', url_for(safe_params.merge(expanded: 1, format: nil)), class: 'btn btn-default'
       - if show_whitespace_toggle
         - if current_controller?(:commit)
           = commit_diff_whitespace_link(diffs.project, @commit, class: 'hidden-xs')