Describe the bug

In entry forms autocompletion proposes wrong results (wrong type).
After having entered a text into the first (eg. person) field, autocompletion of subject area proposes persons instead of places.
Seems cache is not working correctly. Field type should have been used as a cache key, too.

To Reproduce
Steps to reproduce the behavior:

1. Create a person with last name test and first name test
2. Create a concept with name test
3. Create one more person. Open person profile, go to teaching activities, open form to create advisees
4. In Advisee last name field type test , notice that person is proposed
5. Go to subject area field, type test, notice that the same person is proposed instead of a concept

Expected behavior
Autocomplete suggestions should only appear for the appropriate type.

Environment (please complete the following information):

• OS: Linux
• Browser Firefox
• Tomcat version 9
• VIVO version 1.15.1-SNAPSHOT
• Apache Solr