Reduce or fix invalid or unimportant warnings on startup

[H3rnand3zzz]

Expected Behavior

No warnings on the startup.

Current Behavior

On each startup on master branch, I am getting the following warnings in the profanity.log:

1. prof: WRN: [Keyfile] no such file: /home/{user}/.local/share/profanity/bookmark_ignore
   as well as
2. prof: WRN: [OMEMO] User [email protected] has a non 'current' device item list: XXXD2BB1.
   and at times
3. prof: WRN: [Keyfile] no such file: /home/{user}/.local/share/profanity/tlscerts

Possible Solution

1. Probably create bookmark_ignore file if not exists or reduce warning level to log_debug
2. I am not sure what to do with OMEMO since I didn't dive in the topic.
3. Same as 1

Steps to Reproduce (for bugs)

1. Start the profanity
2. Check ../profanity/logs/profanity.log

Context

Environment

• Master branch