Fix XSS issues

[briri]

Brakeman detected a few cross site scripting vulnerabilities:

Confidence: Weak
Category: Cross-Site Scripting
Check: CrossSiteScripting
Message: Unescaped model attribute
Code: IdentifierPresenter.new(:identifiable => User.find(params[:id])).id_for_display(:id => identifier, :with_scheme_name => true)
File: app/views/org_admin/users/edit.html.erb
Line: 63

Confidence: Weak
Category: Cross-Site Scripting
Check: CrossSiteScripting
Message: Unescaped model attribute
Code: IdentifierPresenter.new(:identifiable => Org.find(params[:id])).id_for_display(:id => IdentifierPresenter.new(:identifiable => Org.find(params[:id])).id_for_scheme(:scheme => scheme))
File: app/views/orgs/_external_identifiers.html.erb
Line: 20

Confidence: Weak
Category: Cross-Site Scripting
Check: CrossSiteScripting
Message: Unescaped model attribute
Code: IdentifierPresenter.new(:identifiable => Org.find(params[:id])).id_for_display(:id => IdentifierPresenter.new(:identifiable => Org.find(params[:id])).id_for_scheme(:scheme => scheme))
File: app/views/orgs/_external_identifiers.html.erb
Line: 65

Confidence: Weak
Category: Cross-Site Scripting
Check: CrossSiteScripting
Message: Unescaped model attribute
Code: IdentifierPresenter.new(:identifiable => User.find(params[:id])).id_for_display(:id => identifier, :with_scheme_name => true)
File: app/views/super_admin/users/edit.html.erb
Line: 73

For possible solutions see: https://brakemanscanner.org/docs/warning_types/cross_site_scripting/

[mariapraetzellis]

@martaribeiro please check on this once you're done with the work on the scripting vulnerabilities.