Fix XPATH of lobste.rs engine && add timeout

    engine : xpath

    search_url : https://lobste.rs/search?utf8=%E2%9C%93&q={query}&what=stories&order=relevance

    results_xpath : //li[contains(@class, "story")]

    url_xpath : .//span[@class="link"]/a/@href

    title_xpath : .//span[@class="link"]/a

    url_xpath : .//a[@class="u-url"]/@href

    title_xpath : .//a[@class="u-url"]

    content_xpath : .//a[@class="domain"]

    categories : it

    shortcut : lo

    timeout : 3.0

    disabled: True

  - name : metager

    engine : xpath