feat/skill_settings_filewatch

[NeonJarbas]

builds up on the FileWatcher class introduced in #105 and cleans up a couple things from that PR

• makes skill settings react to file system changes
• moves the config deprecation logs so they are only printed once
• removes a unused (and buggy) patch message emit

[codecov]

Codecov Report

Merging #139 (dac7f48) into dev (6ceb058) will increase coverage by 2.47%.
The diff coverage is 41.92%.

❗ Current head dac7f48 differs from pull request most recent head ee63987. Consider uploading reports for the commit ee63987 to get more accurate results

@@            Coverage Diff             @@
##              dev     #139      +/-   ##
==========================================
+ Coverage   50.35%   52.82%   +2.47%     
==========================================
  Files         119      150      +31     
  Lines       10077     9670     -407     
==========================================
+ Hits         5074     5108      +34     
+ Misses       5003     4562     -441     

Impacted Files	Coverage Δ
mycroft/audio/__main__.py	0.00% <0.00%> (ø)
mycroft/client/enclosure/__main__.py	0.00% <0.00%> (ø)
mycroft/client/enclosure/mark1/arduino.py	0.00% <0.00%> (ø)
mycroft/client/enclosure/mark1/eyes.py	0.00% <0.00%> (ø)
mycroft/client/enclosure/mark1/mouth.py	0.00% <0.00%> (ø)
mycroft/client/speech/__main__.py	0.00% <0.00%> (ø)
mycroft/client/speech/hotword_factory.py	0.00% <0.00%> (-88.89%)	⬇️
mycroft/client/speech/service.py	0.00% <0.00%> (ø)
mycroft/client/speech/silence.py	0.00% <0.00%> (-42.86%)	⬇️
mycroft/client/text/__init__.py	0.00% <0.00%> (ø)
... and 116 more

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