jams-react-client: fix UI issues

UserProfileFieldsList component: max-width: 50%; should be removed on info fields
Contact:
    ConversationId icon should be outlined
    Building should be a suitcase for company name
UiCustomization
    Separate with a line with margin top and bottom 3 sections: title/description, background and logo
    Show color picker directly instead of a button that then displays a color picker
    Fix customization overflowing on mobile
Put action back in the right column table

Ticket: https://redmine.savoirfairelinux.com/issues/7465
Change-Id: I07d5ea053faaabc8dc6847726a8b9fb3ba11b27c