1. fix mediabox openwebinterface info and pic.
    modified:   recipes-openpli/e2openplugins/enigma2-plugin-extensions-openwebif.bb
    modified:   recipes-openpli/e2openplugins/enigma2-plugin-extensions-openwebif/ajax.py
    modified:   recipes-openpli/e2openplugins/enigma2-plugin-extensions-openwebif/info.py
    modified:   recipes-openpli/e2openplugins/enigma2-plugin-extensions-openwebif/mediabox.html