Update 1.0.16

Release from 03/13/2019

Bug fixes:

• fixed markdown bug when a new plan was bought by a partner
• fixed displaying the balance of the user, now it rounds downwards and is fixed to 2 decimals
• fixed a bug where you didn't got payed for the second plan if it was same type
• fixed a bug where withdrawal would be delayed too long cause of low fee
• fixed displaying stats on backoffice
• fixed buying plans with a value of 0 AMC
• fixed buying plans with a value exact as balance
• added changelog to options menu