Steps to reproduce:
1. Create User group with read permissions to Templates and Hosts
2. Create User role with User type = Admin
3. Create User, add this user to group from step 1 and grant him role from step 2
4. Login with this User

5. Try to Create Template/Host
Template/Host creation fails as User has no access for Template/Host groups

6. Try to Import Template/Host
Import template/host fails with error: Import failed. No permissions to referred object or it does not exist!

7. Try to Create maintenance period
Creation of maintenance period fails with error: Cannot create maintenance period. At least one host group or host must be selected.

8. In 7.4 try to use Host Wizard
Creation fails at 'Create or select a host' step, as User can't select any Host group

'Create template', 'Create host', 'Import', 'Host Wizard' and 'Create maintenance period' buttons are enabled for User without write permissions to any host groups.

Suggestion is that these buttons should be disabled like 'Create template group (Only super admins can create groups)' and 'Create host group (Only super admins can create groups)' are, at least until one Template group or Host group is added with read-write permissions.