Log in and sign up page of web project should have email and retype password validation

[ghost]

• Now, it looks like users can type normal texts as an email field.
• Password should be validated with retype password field to make user sure about typing correct password.

[ghost]

• Log in page validations are done.
• Committed to iss79 branch which is opened for this issue.

[ghost]

• Sign up page validations are done.
• Committed to iss79 branch.
• iss79 is merged with master branch.