Does one still have to make up for qadha salaah after performing hajj?

Q: If one has made Hajj and and during Hajj one made sincere taubah for missing previous salaah and since Hajj one has never missed another salaah, do you still have to repay your outstanding salaah that was incurred in the years before your Hajj? I am asking because I read that the person who performs Hajj emerges sinless (all sins forgiven) like a newborn baby, and sincere taubah was made for missing previous salaah. 

Water splashing when making istinja

Q: I am facing a weird issue for the past couple of weeks. I have observed that while performing istinja on an Indian toilet, the water splashes from the toilet surface and there is a chance that these splashes might end up on one's body, clothes or shoes.

What is the Islamic ruling for such splashes? From my part, I try very hard to avoid water from splashing but the water ends up splashing anyways. 

Giving zakaat to a person in debt

Q: A maid (widow) is in dire need to buy a small room. She sells her only possession (gold worth one lakh rupees) for this purpose and hands over this amount to the middleman. The middleman is responsible for giving this one lakh to the actual owner of the room who is in another city. The owner will arrive after a month to receive payment. Is this lady eligible for zakaat after handing over the money to the middleman or will she be eligible when the money will be transferred to the actual owner after one month?

Selling a toy which contains music

Q: We have recently received stock of an Islamic toy which we were unaware had music... The toy has many beneficial learning pages such as duas, surahs, Arabic alphabets, etc. but there is a button which plays nasheeds with musical instruments in the background.

Will it be permissible to sell such a toy? If the toy is sold with a note on how to remove the music and if the customer purchases it and chooses not to remove the music wire, will the seller be sinful?