Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1625611

Description of problem:

If you upload Host Facts that contain characters like <>"&

1. curl -u admin:changeme -k https://localhost/api/v2/hosts/facts -d '{"name": "facthost", "facts": {"name; <>\"&": "value; <>\"&", "operatingsystem": "RedHat", "operatingsystemrelease": "6.12"}}' -H 'Content-Type: application/json'

They are not displayed properly in UI

1. Monitor > Facts (/fact_values)

fact name is double escaped in the table

facthost name <>"& value <>"&

2. Monitor > Facts (/fact_values)

links in Name and Value columns points to not valid searches

3. Monitor > Facts > View Chart

fact names and values are double escaped in the charts

4. Monitor > Trends
values are escaped twice in graphs in Trends

Version-Release number of selected component (if applicable):
Satellite 6.4 snap 20
satellite-6.4.0-13.el7sat.noarch
katello-3.7.0-5.el7sat.noarch
foreman-1.18.0.18-1.el7sat.noarch

Additional info:
bz 1509442 cooment 5