Implement SI-style (thin space) thoudands separator
Show bitcoin quantities with full precision, even in the presence of trailing zeros
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/qt/overviewpage.cpp
	src/qt/transactiondesc.cpp
Remove unused fAlign argument from BitcoinUnits::format and friends
Add comments re BitcoinUnits::formatWithUnit/formatHtmlWithUnit
Merge pull request #4167

7149499 Add comments re BitcoinUnits::formatWithUnit/formatHtmlWithUnit (Roy Badami)
f7d70c6 Remove unused fAlign argument from BitcoinUnits::format and friends (Roy Badami)
2e4fee2 Show bitcoin quantities with full precision, even in the presence of trailing zeros (Roy Badami)
7007402 Implement SI-style (thin space) thoudands separator (Roy Badami)