Add NF4 RNAseq mini-course v0 (nextflow-io#526)

* Domain-specific mini-course demonstrating how to apply learnings from Hello Nextflow to RNAseq processing

* Includes a simple RNAseq processing pipeline that reuses the genome and read data from the deprecated `hands-on` training. 

* Implements the method described in https://www.bioinformatics.babraham.ac.uk/training/RNASeq_Course/Analysing%20RNA-Seq%20data%20Exercise.pdf

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Co-authored-by: Ken Brewer <kenibrewer@users.noreply.github.com>

New multi-course structure for training materials (nextflow-io#486)

Major refresh of the training materials

* Pared down and streamlined the Hello Nextflow course (v2)
* Spun out the genomics material into a separate mini-course, Nextflow for Genomics
* Added stubs/placeholders for Nextflow Run and Side Quests
* Consolidated the experimental and/or unfinished content into `other/`
* Updated and streamlined the training index

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Co-authored-by: Jonathan Manning <jonathan.manning@seqera.io>
Co-authored-by: Rob Syme <rob.syme@gmail.com>
Co-authored-by: Marcel Ribeiro-Dantas <marcel.ribeirodantas@seqera.io>
Co-authored-by: Marcel Ribeiro-Dantas <mribeirodantas@seqera.io>
Co-authored-by: Phil Ewels <phil.ewels@seqera.io>

Merge pull request nextflow-io#508 from ewels/fix-docs-release

Fix docs release

Merge pull request nextflow-io#497 from ewels/master

Add mike versioning

Merge pull request nextflow-io#131 from mribeirodantas/remove-eq-sign…

…-process

Equal sign for directives only in config files

Remove_unused_folder

Merge pull request nextflow-io#68 from seqeralabs/Parsing_move

Parsing move