fix(Server): Workaround for .wasm file mime type (#1575)

[samsam2310]

• This is a bugfix
• This is a feature
• This is a code refactor
• This is a test update
• This is a docs update
• This is a metadata update

For Bugs and Features; did you add new tests?

Yes.

Motivation / Use-Case

fixes #1575

Breaking Changes

No

Additional Info

[jsf-clabot]

Thank you for your submission, we really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.

[alexander-akait]

Good job, thanks!

[alexander-akait]

Please accept CLA

[samsam2310]

I have accepted but the licence/cla seems still in pending ?

[codecov]

Codecov Report

Merging #1580 into master will increase coverage by 0.03%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1580      +/-   ##
==========================================
+ Coverage   74.02%   74.06%   +0.03%     
==========================================
  Files          10       10              
  Lines         670      671       +1     
==========================================
+ Hits          496      497       +1     
  Misses        174      174

Impacted Files	Coverage Δ
lib/Server.js	81.42% <100%> (+0.05%)	⬆️

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[alexander-akait]

@samsam2310 CLA sometimes buggy, will be shipped in near future

[odinho]

@samsam2310 If you rebase onto newest master, the Travis tests should pass.