- remove unnecessary field sender in userprofile.qml
    - cover user facing string with qsTr to get picked by translations
    - add spacing and fix theming issue
    - increase and add color to username
    - change back to QVector from QLinkedList cause I have mistaken
    better time complexity to give better benchmark

red

    - DeviceVerificationList change to LinkedList to improve time
    complexity while deleting
    - Downgrade the flow to not use key.verification.done and
    key.verification.ready

recieving start or request

Fix issues when sending images to some clients.