* WIP Adding change nickname dialog.
* WIP adding nickname change dialog.
* WIP nickname dialog.
* WIP: Able to set conversation nicknames. Next step cleaning and adding to conversation list menu.
* Fix message capitilisations.
* Add change nickname to conversation list menu.
* Enable clear nickname menu item.
* Added messages for changing nicknames.
* Clearing nicknames working from header and message list.
* Adding modal styling to nickname modal.
* Reorder nickname menu item positions.
* Add group based conditional nickname menu options to conversation header menu.
* minor tidying.
* Remove unused error causing el option.
* Formatting.
* Linting fixes.
* Made PR fixes
* Prioritise displaying nicknames for inviting new closed group members
and updating closed group members.