Merge pull request #16 from zeewolfik/master

PoloniexNight theme + hardcode styles (not all) removal + coincontrol dialog timezone fix
Fix unlock problems
comment out coin control info until later
Themes screenshots - thumbnails
Themes screenshots added to README.md
Merge branch 'master' of https://github.com/zeewolfik/HyperStake
PoloniexDay theme

- new theme
- make install will now install themes to release directory (helpful in Qt
  Creator)