revert addition of not owned code

[sokra]

fix LICENSE file for JSF

Revert "refactor(src): migrate loglevelnext into webpack-log"
Revert "test(loglevel): migrate tests from loglevelnext"

This reverts commit d706dfd.
This reverts commit b5c2017.

• This is a bugfix
• This is a new feature
• This is a code refactor
• This is a test update
• This is a typo fix
• This is a metadata update

Motivation / Use-Case

For legal reasons it's not allowed to commit code that is not owned. See also CLA.

[codecov]

Codecov Report

Merging #14 into master will increase coverage by 3.19%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #14      +/-   ##
==========================================
+ Coverage    93.1%   96.29%   +3.19%     
==========================================
  Files           5        1       -4     
  Lines         145       27     -118     
==========================================
- Hits          135       26     -109     
+ Misses         10        1       -9

Impacted Files	Coverage Δ
src/index.js	96.29% <100%> (ø)	⬆️

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