update overviewpage.ui
update overviewpage.ui

Changed exchange link from Comkort to Bleutrade
Comkort is closing (good guys, we will miss them) and we are now traded on Bleutrade,
Its a very nice exchange with a refreshing, positive minded community.
EuropecoinEUORG/EuropecoinEUORG,EuropecoinEUORG/EuropecoinEUORG,EuropecoinEUORG/EuropecoinEUORG,EuropecoinEUORG/EuropecoinEUORG,EuropecoinEUORG/EuropecoinEUORG