Support customization of parameter types

[cvbarros]

When creating parameters, TeamCity allows to edit a full specification, including the possibility of creating "sensitive" parameters.

This issue is to give support for:

• Password type
• Display Type (hidden, prompt, normal)
• Parameter Description
• Checkboxes
• Select Lists and it's items
• Read-Only

[cvbarros]

Reopened due to mismatch of assignment