Custom vars not displayed in searchbar in case it matches the object type.

[tbauriedel]

Describe the bug

The searchbar has an bug with "short" custom vars, that matches the object type.

It seems "built-in" variables are prioritized inside the SearchBar. Custom vars are display at the bottom. Also I think there is an hardcoded limit of suggestions that will be displayed.

"os" is part of the string "host". So if you try to search for "os" inside of icingadb/hosts it will always show the "built-in" variables first. The custom var will not be shown.

To Reproduce

1. Create a custom var "os"
2. Try to use it inside of icingadb/hosts
3. You wont find it

Expected behavior

The custom var should be displayed when it is matching 100%.

Your Environment

Include as many relevant details about the environment you experienced the problem in.

• Icinga DB Web version (System - About): 1.1.3
• Icinga Web 2 version (System - About): 2.12.1
• icinga/icinga-php-library: 0.14.1
• icinga/icinga-php-thirdparty: 0.12.1

ref/NC/836693