Improve user search using the GET profile (#754)

* Add getProfile in ClientProxyProtocol

* Add fetchProfileIfNeeded

* Refactor search

* Update StartChatSuggestedUserCell UI

* Add showProfilePopover action

* Remove popover code

* Add UTs in StartChatViewModelTests

* Add UI tests

* Cleanup code

* Refine design

* Fix design

* Localise StartChatSuggestedUserCell

* Update localisations

* Update StartChatSuggestedUserCell design

* Fix UT

* Fix PR comments

* Apply suggestions

* Fix typo

ElementX/Resources/Localizations/de.lproj/Localizable.strings

@@ -37,7 +37,8 @@
 "action_save" = "Save";
 "action_search" = "Search";
 "action_send" = "Send";
-"action_share_link" = "Share";
+"action_share" = "Share";
+"action_share_link" = "Share link";
 "action_skip" = "Skip";
 "action_start" = "Start";
 "action_start_chat" = "Start chat";
@@ -214,6 +215,7 @@
 "screen_signout_in_progress_dialog_content" = "Signing out…";
 "screen_signout_preference_item" = "Sign out";
 "screen_start_chat_error_starting_chat" = "An error occurred when trying to start a chat";
+"screen_start_chat_unknown_profile" = "We can’t validate this user’s Matrix ID. The invite might not be received.";
 "session_verification_banner_message" = "Looks like you’re using a new device. Verify it’s you to access your encrypted messages.";
 "session_verification_banner_title" = "Access your message history";
 "settings_rageshake" = "Rageshake";