Fixes some feedback/error messages in the variable handler; closes #30

- Moves $who to the beginning of the message, followed by a colon.
- Replaces the word "removed" with "deleted".
- Deletes trailing whitespaces.
- Expands contractions; we aren't women ;)
Merge branch 'master' of https://github.com/Milk-Enterprises/Gambot

Conflicts:
	Gambot.Modules.Variables/VariableHandler.cs
Merge pull request #30 from emilh91/master

Make "variable deleted" message less ambiguous.