Janaazah

Q: Covering the janazah of a woman, how did it start?

Q: Is there any virtue mention in the hadith on dying in the month of Ramadan and the day of Friday?

Q: Is the extra wording “wa jalla thanauka’ in funeral prayers established from any Hadith?

Q: 

1. The qamees for the mayyit, please give me the proofs for it. It is mentioned in Saheeh Bukhari that there was no qamees in the kafan for Nabi Kareem (Sallallahu Alayhi Wasallam).
2. Abdullah ibn Umar once saw a shelter on a grave, and ordered it to remove it. He said that it is the good deeds of the person who put him away. (Saheeh Bukhari). Give me the page number. Please give me the references.

Q: 

1. Is both salaams in janazah salaah wajib like other salaah?
2. Is there anything that can be read between the fourth tabeer and the tasleem?
3. Where the hand should be placed in the posture between the fourth tabeer and the tasleem?
4. While making salaam, should one make niyyat to the people on that side, farishta, jinnat etc like in other salaah?

Q:

1. The Hadith: "You should inform me about anyone from you who passed away, indeed my prayer is a blessing for him. I’la us Sunan vol 8 pg 326. Is it authentic?
2. Where it is better to pray the janazah salaah in the sehn of the masjid or in the graveyard where janazah salaah is usually prayed and that place is specifically for janazah Salaah?
3. Making two salaams in janazah prayer. Please give me the references.

Q: Is it the wali who has more right to take funeral decisions? Then if the wife dies, does the husband have more right or the wali? In this case who has more right for funeral decisions?

Q: If a person enters into a fight because his girlfriend was harassed by his friend but was shot dead by the friend's guard in the process, can the victim be called Shaheed?

Q: Is there any authentic hadith from the books of hadith about the forty steps for each person to carry the janazah?

Q:

1. Please let me know if installing a gravestone with the name of the deceased inscribed on it for the purpose of identification is Jaiz? I am told that the Prophet (Sallallahu Alayhi Wasallam) had put a gravestone on the graves of his son Ibrahim (Alayhis Salaam) and also a Sahabi Uthmaan bin Mazoon. Even today we notice gravestones in many of the graves at jannatul Baqi. 
2. Is it compulsory to reuse a grave inspite of sufficient vacant space being available in the graveyard? If required after how long can a grave be reused?