Update core

- add "Benchmarked" timestamp to miner stats (issue RainbowMiner#1663)
- add "Date" column to Benchmarks page on localhost (issue RainbowMiner#1663)

Update unprofitable-cpu.json

Update core

- fix downloader, in case the removal of backup paths fails (this came up due to issue RainbowMiner#1655).

Bump version to v4.7.3.2

Bump version to v4.7.3.0

Update miner Gminer

- automatically use ETH wallet in coins.config.txt for Gminer contest fwiw

Bump version to v4.7.2.8

Bump version to v4.7.2.7

Bump version to v4.7.2.6

Update Updater.ps1

- add wait for write lock method to update windows executables (curl.exe/7z.exe/GetCPU.exe)