Validation in reset password form

Explanation

Fixes #91 Validation in reset password form added to check whether the new password and confirm passwords are same or not.

[x] The PR title starts with "Fix #bugnum: "followed by a short, clear summary of the changes. ( If this PR fixes part of an issue, prefix the title with "Fix part of #bugnum: ...")
[x] The PR explanation includes the words "Fixes #bugnum: ..." ( or "Fixes part of #bugnum" if the PR only partially fixes an issue ).
[x] The PR does not contain any unnecessary auto-generated code from Android Studio.
[x] The PR does not break any part of the existing code.
[x] The PR creator have carefully read & adhere to the contributing guidelines of the project.
[x] The PR is raised for an issue that has been assigned to you.
[x] The PR is made to the branch that's called "develop".
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