Fix bad grammar and wordiness

[pgaskin]

A few notes for the future:

• When something has been deleted, it does not need to end with a !. A . is better.
• Try and avoid contractions
• You do not need to end a past tense verb (usually ending with -ed) with successfully. This is implied by the past tense verb.
• When you are referring to a object which was the target of an action, refer to it using the or a. Not the specified, the chosen, or nothing.
• When you are doing something to an object, the verb (unless it is irregular), should end with -ing.
• Try to write without referring to you. Instead of saying before you change, say before changing
• has after a plural noun should be have. Example: repositories has been deleted should be repositories have been deleted

Good grammar and concise sentences are important because it makes gitea easier to use and look more professional.

This is not everything about this, I will submit a few more PRs later. Also, I will not be able to start the audit logs feature yet, I am quite busy right now.

[DblK]

LGTM

[andreynering]

LGTM

[pgaskin]

@lunny I think I am finished with this PR now.