Coding standard 2.0.0

[phil-davis]

like done in core owncloud/core#36580

and apply latest drone starlark code changes
Note: there was no effect here on .drone.yml

Note: there were no changes to PHP code needed for this app to pass code-style 2.0.0

[codecov]

Codecov Report

Merging #679 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #679   +/-   ##
=========================================
  Coverage     17.22%   17.22%           
  Complexity        1        1           
=========================================
  Files            57       57           
  Lines          1138     1138           
=========================================
  Hits            196      196           
  Misses          942      942

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update d33e2e4...0796669. Read the comment docs.