v1.2.2 Install speed, build preview, nsfw filter option

[glucauze]

Try to improve install and start speed.

If --use-cpu is not use will install gpu requirements by default. Note that GPU is not activated by default.

add nsfw threshold option (1==disable) for performance reason. Use responsibly. There are now too many nsfw disabling options for the measures taken here to be effective.

Fix build preview

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This discussion was created from the release Merge pull request #46 from glucauze/v1.2.2.

[LucianoDaluz]

Any up date on the horizon?