Merge pull request #17 from zeewolfik/master

PoloniexDay theme + screenshots in readme.md + extra install step in qmake (themes)
coin control dates from blockchain

This fixes the problem of bad dates when importing a privkey.  When
importing a privkey out.tx txtime will be the time of import. So coin
control data will be incorrect.
Qt5 Compatible

if mac compile does not work, change src/qt/macdockiconhandler.mm
gui: change the S4C icon to a new style icon
Merge pull request #18 from moneromooo/s4c-icon

gui: change the S4C icon to a new style icon
gui: change the block explorer icon for a new style one
Merge pull request #19 from moneromooo/blexp-icon

gui: change the block explorer icon for a new style one
minted instead of mined
Add Custom Change Address to S4C
Merge remote-tracking branch 'upstream/master'