Update docs for docs.ohif.org

docs/lesion-tracker/user-accounts.md

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+# Lesion Tracker - User Accounts
+
+## Sign In
+
+LesionTracker requires authentication to access the viewer.
+If you are already a registered user, enter Your Email and Password and click **Sign In**
+
+![Login](../assets/img/LesionTracker/LT_Login.png)
+
+## Register An Account
+
+If you are a new user, click **Need An Account** and fill the all fields and click **Join Now**
+
+![Need Account](../assets/img/LesionTracker/LT_Need_Account.png)
+
+Note: There is a Test Drive button on the top-right of Login page. Test Drive is used to skip registration process and allows to use LesionTracker with a test account. This will be removed in the next versions.
+
+## Forgot Password
+
+To reset the password, enter Your Email and click **Send Reminder**. An email that includes a link to reset your password will be sent to your email address.
+
+![Forgot Password](../assets/img/LesionTracker/LT_Forgot_Password.png)
+
+## Change Password
+
+To change password:
+
+1. Click Configuration menu icon at the top-right of the workspace then select **Change Password**
+2. Enter your password and click **Change Password**
+
+![Change Password](../assets/img/LesionTracker/LT_Change_Password.png)
+
+## Logout
+
+To logout, click **Logout** on the Configuration menu.
+
+![Logout](../assets/img/LesionTracker/LT_Logout.png)