App Lock, Contact rename and some other

[ioiouaua]

Hi. For first thank you for developing this app Everything works fine but can I ask you for:

• App lock function. For example after some period of inactive access to chats will be locked with password/pin/fingerprint request
• Contacts rename. Some contacts have the same name and if I have a large list of contacts it is very difficult to find the right contact. Yes, you can remember them by key, but agree, this is not too convenient...
• In Settings we text | input but if len of input >32 then the text is transformed and it appears almost one letter per line. This does not look good. This can be fixed if you change the display, you can make them in two rows or take an example from Material UI.
• In chat, time when message is received can shows only for last and for other you can add button to view message info (when this message is received maybe some other info).

And some another questions:

• Is messages stores encrypted in device?
• How we can help you for developing this app? (ex. donation)
• I have read about group chat issue. Where we can track implementation of this function?