Add the option to add Remarks to a added movie

[CptPie]

Either when adding a movie or/and afterwards.
Size wise 200-250 chars would be enough.
This field would be intended for notes which will be displayed when selecting movies (i.e. "please watch the b/w version").

Requirements:

• Addition of a remarks field in the movie struct
  • Adapt the db connectors
• Addition of a remarks field on "add-movie.html"
  • This field should also be filled when autofill is used (the only field that does not get ignored)
• Render remarks on movie-info.html
• Render remarks on cycle end view for the admin