Update QIIME2 2018.6 to 2019.7

[d4straub]

Running with -profile test,conda & -profile test_multi,conda works.

Still to test/confirm that

• results are similar to v1.1.0 output Actually similar but not identical, because DADA2 v1.06 to v1.10.
• -profile test ignores an error at alpha_diversity (observed_otus_vector), which shouldn't fail
• automatic generation of the classification database works

[d4straub]

Once it is merged and the new container is build it should work.

edit: this should fix #78 and make #41 possible to solve.

edit2: after more testing in dev it could be released as 1.1.1

[d4straub]

About linting test failures:
All qiime2 stuff comes from Channel qiime2/label/r2019.7, would it maybe help to add that specifically? edit: nope, it doesn't!

Conda dependency had an unknown version:
libgcc-ng=9.1.0
libgfortran-ng=7.3.0
libstdcxx-ng=9.1.0
xopen=0.7.3
edit: nope, version is correct.

Despite the linting problems, the environment works with conda.

[apeltzer]

Merging this to 2019-07, to see if things work and also update accordingly where necessary.