Hints for portfolio in community

Hints

• asv-description-first-para-too-short
  dev.tchx84.Portfolio.metainfo.xml:26 - A minimalist file manager for those who want to use Linux mobile devices.
  The first `description/p` paragraph of this component might be too short (< 80 characters). Please consider starting with a longer paragraph to improve how the description looks like in software centers and to provide more detailed information on this component immediately in the first paragraph.
• asv-desktop-app-launchable-omitted
  dev.tchx84.Portfolio.metainfo.xml -
  This `desktop-application` component has no `desktop-id` launchable tag, however it contains all the necessary information to display the application. The omission of the launchable entry means that the application can not be launched directly from installers or software centers. If this is intended, this information can be ignored, otherwise it is strongly recommended to add a launchable tag as well.