Css fixes to glossary: select component and icons

I have made the dropdown as long as I am able to manually so it works across all screen sizes (in the Languages Select dropdown for example) without reworking the entire Select component but I should rework this so that the dropdown is always the length of the select input.
Image attached to show where improvement can be made.

Cannot refactor with an antd select, need to use the other select component.

As part of this issue the icons in the glossary view header need to be refactored to antd also