Time Format Update

[Meltie2013]

Changes Made:

• change the time output format for restart / shutdown notifications
• also check where we should use singular or plural forms for words: Day, Hour, Minute, Second

Format: It should be like: [SERVER] Shutdown in 15:00 and NOT like: [SERVER] Shutdown in 15 Minute(s)

Video Evidence: https://www.youtube.com/watch?v=z8za1_ozG-U

Examples:

[SERVER] Shutdown in 7:00
[SERVER] Shutdown in 6:00

<-- When the timer gets down to 05:00 it will then start to display seconds as shown below. -->
[SERVER] Shutdown in 5:00
[SERVER] Shutdown in 4:45
[SERVER] Shutdown in 4:30
[SERVER] Shutdown in 4:15
[SERVER] Shutdown in 4:00

Notice: This has been shared around from TrinityCore, Skyfire and AzerothCore. Not the original author!

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This change is 

[Meltie2013]

@billy1arm This one should be ready to go.