Don't send inbound session to self and claim and send all keys at once.

Also fixes a bug with an empty room settings window introduced in the
port.

Also fixes some resize issues with stupid workarounds to our resize
logic. This really needs to be cleaned up at some point!

    - 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