Feature: Add mock testing to ZB (#569)

* Adds mock testing to ZB

* STEALS improved time validation code from the original STOLEN validation code :D

* Mini fixes from review

* happy fun comment stealing

* Moves the loop checker earlier to ensure no double appendages

* Fixes sneaky test

* Fixes the important part where mock tests work instead of live tests

* Skips authenticated endpoints for mock testing.

* lint

* Updates candle wrapper functions to respect design

* basic linting fix

* Reverts configtest.json, updates readme to be way better, adds coverage to validateCandlesRequest

* Tiniest grammatical fix

* Fixes more outdated code references

* Closing out a high

* Fixes spacing

* Replaces all instances of 4 spaces in tmpl files with a tab

* fixes spacing and tab related readme issues once and for all 🤞

* tidy

* indentation violation identification situation

exchanges/itbit/README.md

@@ -31,8 +31,8 @@ Join our slack to discuss all things related to GoCryptoTrader! [GoCryptoTrader
 + Individual package example below:
 
 ```go
-  // Exchanges will be abstracted out in further updates and examples will be
-  // supplied then
+	// Exchanges will be abstracted out in further updates and examples will be
+	// supplied then
 ```
 
 ### How to do REST public/private calls
@@ -48,9 +48,9 @@ main.go
 var i exchange.IBotExchange
 
 for x := range bot.Exchanges {
-  if bot.Exchanges[x].GetName() == "Itbit" {
-    i = bot.Exchanges[x]
-  }
+	if bot.Exchanges[x].GetName() == "Itbit" {
+	i = bot.Exchanges[x]
+	}
 }
 
 // Public calls - wrapper functions
@@ -58,13 +58,13 @@ for x := range bot.Exchanges {
 // Fetches current ticker information
 tick, err := i.FetchTicker()
 if err != nil {
-  // Handle error
+	// Handle error
 }
 
 // Fetches current orderbook information
 ob, err := i.FetchOrderbook()
 if err != nil {
-  // Handle error
+	// Handle error
 }
 
 // Private calls - wrapper functions - make sure your APIKEY and APISECRET are
@@ -73,7 +73,7 @@ if err != nil {
 // Fetches current account information
 accountInfo, err := i.GetAccountInfo()
 if err != nil {
-  // Handle error
+	// Handle error
 }
 ```
 
@@ -85,13 +85,13 @@ if err != nil {
 // Fetches current ticker information
 ticker, err := i.GetTicker()
 if err != nil {
-  // Handle error
+	// Handle error
 }
 
 // Fetches current orderbook information
 ob, err := i.GetOrderBook()
 if err != nil {
-  // Handle error
+	// Handle error
 }
 
 // Private calls - make sure your APIKEY and APISECRET are set and
@@ -100,13 +100,13 @@ if err != nil {
 // GetUserInfo returns account info
 accountInfo, err := i.GetUserInfo(...)
 if err != nil {
-  // Handle error
+	// Handle error
 }
 
 // Submits an order and the exchange and returns its tradeID
 tradeID, err := i.Trade(...)
 if err != nil {
-  // Handle error
+	// Handle error
 }
 ```