Python script/samples updates

[Enkidu93]

Fixes #621
Fixes #609

Changes:

• Remove ServalApp
• Update python client/download debug script
• Fix README typos

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This change is 

[ddaspit]

Reviewed 11 of 11 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @johnml1135)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 64.50%. Comparing base (9743ae8) to head (7898569).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #622   +/-   ##
=======================================
  Coverage   64.50%   64.50%           
=======================================
  Files         280      280           
  Lines       14113    14113           
  Branches     1824     1824           
=======================================
  Hits         9103     9103           
  Misses       4349     4349           
  Partials      661      661           

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[johnml1135]

scripts/download_build_data.py line 110 at r1 (raw file):

            pretranslation_objs += list(map(lambda p: p.to_jsonable(), pretranslations))

        # PARALLEL CORPORA

I am assuming you tested this out. If it works, I am fine with it.

[johnml1135]

Reviewed 11 of 11 files at r1, all commit messages.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @Enkidu93)

[Enkidu93]

Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @johnml1135)

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scripts/download_build_data.py line 110 at r1 (raw file):

Previously, johnml1135 (John Lambert) wrote…

I am assuming you tested this out. If it works, I am fine with it.

Yes, it works

[johnml1135]

Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @Enkidu93)