Update webpack.config.js

[maschino]

Summary

Tried to fix travis build.

Checklist

Please ensure that you've fulfilled the following tasks:

• [x] My code follows the style guides of this project and yarn lint does not throw errors
• [x] My code is well tested and did not decrease the test coverage
• [x] All new and existing tests have passed
• [x] My submission passes the build
• [x] I've added changes to CHANGELOG.MD
• [x] I've updated the project documentation

[coveralls]

Pull Request Test Coverage Report for Build 54

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

---

Totals
Change from base Build 52:	0.0%
Covered Lines:	126
Relevant Lines:	126

---

💛 - Coveralls

[christophka]

The exclude for build breaks the babel/webpack workflow - removing it fixed the problem