change log level at runtime
store feed content hash
New label for pt.properties.
Merge pull request #278 from gabrielrcp/translation

New label for pt.properties.
store average entry interval and use it to decide when to reschedule feed refresh when it returns 304
use pubsub infos from fetched feed, not the existing feed
store last entry date
Adding basic support for favicon
refactoring favicon fetcher
prevent NPE
Update languages.properties

Turkish translation
Create tr.properties

Turkish language translation.
Merge pull request #281 from canyapan/patch-4

Create tr.properties
Merge pull request #280 from canyapan/patch-3

Update languages.properties
change favicon rest method to accept a subscription id
log levels
use pathparam for id
initial liquibase setup
Update tr.properties

Turkish translation corrections.
cyfieithiadau Cymraeg / Welsh translations