Some changes

-General: To make it easier to see your coins, the options menu of every
Activity includes the "My Profile" option.(Excluding ProfileActivity,
Logger, and RegisterUser)

- AnswerQuestionActivity: Is now given the question text as an extra
from the QuestionView activity so the user can view the question while
they answer.

- AskQuestionActivity: Removed the askByLocation checkbox since it
doesn't seem like we're going to be using it at this point.

- Logger & RegisterUser: Removed the menus from these Activities (they
were empty anyway)

- QuestionView & AnswerViewAdapter: Only lets users answer questions if
the question doesn't belong to them. Also, users cannot upvote/downvote
their own answers.