Updates Staking Tab names

[dezryth]

Closes #3218

Updates Tickets Status to Ticket Status.
Updates History Tickets to Ticket History.

[amass01]

@dezryth Thanks for bringing this to the table.

My thoughts from matrix chat room:

These indeed read better than current labels, just thought as we already changed this page title and it's menu item label
from Tickets to Staking lately maybe we should use it also in tabs labels.

Something like: Stake, Staking Status, Staking History & Statistics ?

[dezryth]

@amassarwi I personally feel inclusion of the word "Ticket" in most of these tab names is the most appropriate as the tabs display information on ticket purchasing and tickets purchased by the wallet, while "Stake/Staking" will lead to a little more mental gymnastics to understand what the context is. Perhaps more importantly, since Tickets are a huge differentiator for Decred as opposed to other cryptocurrencies that have PoS as part of their consensus and "Staking", I think it's important for us to keep the term "Ticket" around somewhat prominently. This is my opinion, but interested to hear what others think. I don't feel too strongly about it one way or the other.

[amass01]

I'm fine with both, was just a suggestion.

[amass01]

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