Emoji: Improve emoji-Reactions

src/app/commoncomponents/ChatviewMessageOptions.qml

src/app/commoncomponents/EmojiReactionPopup.qml

src/app/commoncomponents/EmojiReactions.qml

src/app/commoncomponents/JamiListView.qml

src/app/commoncomponents/SBSMessageBase.qml

src/app/constant/JamiQmlUtils.qml

src/app/constant/JamiStrings.qml

src/app/constant/JamiTheme.qml

src/app/mainview/components/ChatViewFooter.qml

src/app/mainview/components/ChatViewHeader.qml

src/app/nowebengine/previewengine.cpp

src/app/webengine/emojipicker/EmojiPicker.qml