Transaction fee paid fix

[Neopallium]

changelog

modified logic

• Use the paying account id in the TransactionFeePaid event, instead of the caller account.
• Remove the 80/20 split between treasury/author. The block author gets 100% of transaction/protocol fees.

[codecov[bot]]

Codecov Report

Merging #1479 (835db89) into develop (de418e9) will decrease coverage by 0.01%. The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop    #1479      +/-   ##
===========================================
- Coverage    53.94%   53.93%   -0.01%     
===========================================
  Files          151      151              
  Lines        32890    32890              
===========================================
- Hits         17741    17740       -1     
- Misses       15149    15150       +1     

Impacted Files	Coverage Δ
pallets/runtime/develop/src/runtime.rs	3.63% <ø> (ø)
pallets/transaction-payment/src/lib.rs	49.26% <100.00%> (ø)

... and 1 file with indirect coverage changes