console vc: add htmlHeader property
console vc: connect web view property and set delegate
console vc: set textfield delegate
console vc: add entry array
console vc: set light StatusBarStyle
console vc: add object htmlHeader to entries when user tries command
console vc: implement reloadEntries
command vc: set htmlHeader string to present console vc
command vc: connect console navigation button to try command action
console vc: update webview constraints
console vc: set text field autocapitalizationType
console vc: implement redis
console vc: implement exec command
console vc: implement history
console vc: connect previous cmd history action
console vc: connect next cmd history action
console vc: handle history previous cmd