feat: convert balance units

[satello]

• Do all unit conversions on balance amounts

[coveralls]

Pull Request Test Coverage Report for Build 450

• 4 of 32 (12.5%) changed or added relevant lines in 9 files are covered.
• 4 unchanged lines in 2 files lost coverage.
• Overall coverage decreased (-0.3%) to 23.735%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/containers/dispute/components/details/index.js	0	1	0.0%
src/containers/dispute/components/ruling/index.js	0	1	0.0%
src/sagas/dispute.js	0	1	0.0%
src/containers/disputes/index.js	0	2	0.0%
src/containers/dispute/index.js	0	2	0.0%
src/utils/number.js	0	3	0.0%
src/containers/home/index.js	0	5	0.0%
src/containers/tokens/index.js	0	13	0.0%

Files with Coverage Reduction	New Missed Lines	%
src/containers/tokens/index.js	1	0.0%
src/sagas/dispute.js	3	1.12%

Totals
Change from base Build 448:	-0.3%
Covered Lines:	255
Relevant Lines:	910

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💛 - Coveralls