Xtcryptosignals

Disabled `FTM` as they are rebranding to `S` and not clear when swap is done in Exchanges.
Fix `Coinbase Pro` exchange API

Add countdown timer in main page to redirect to main coins/tokens page.
Removed `XMR` token and pairs from `Binance`.

Increase log verbosity in Notifications Task.
Removed `BUSD` token and pairs.

Fix Projects Twitter Followers count.
Updated `README.md`.
Removed OkCoin pair `LTC / USD`.
Code refactoring and fixes.

Fixed Liquid fetched pairs, as they were removed.
Removed Binance pair `USDC / USDT`.
Decrease pooling time of `ORDER_BOOK_SCHEDULE` due to Binance restrictions.

Added endpoint `GET /tokens/ticker/<pair>/last`.
Code refactoring and fixes.