improve name clarity

This MR improves create/update draft form, as follows:

• Nama label will be written "Nama Lengkap" to ensure users input their full name.
• Dosen label will be written "Dosen Pembimbing" or "Partner"
• In creation form, nama input field will have default value from user.mahasiswa.nama_lengkap or user.dosen.nama_lengkap. No changes in update form

Please raise concerns or give feedback to this initiative. Thank you!