Primitive function name uniqueness

[rwedge]

Fixes some errors related to when multiple primitives used same aggregation function or when two features with same primitive but different parameters were applied to the same base feature.

[codecov]

Codecov Report

Merging #424 into master will increase coverage by 0.03%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #424      +/-   ##
==========================================
+ Coverage   96.11%   96.14%   +0.03%     
==========================================
  Files          92       92              
  Lines        8162     8232      +70     
==========================================
+ Hits         7845     7915      +70     
  Misses        317      317

Impacted Files	Coverage Δ
...turetools/computational_backends/pandas_backend.py	98.2% <100%> (+0.01%)	⬆️
...tests/computational_backend/test_pandas_backend.py	100% <100%> (ø)	⬆️

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[kmax12]

LGTM