Make the software architecture more lightweight

[jo-elimu]

Hosting & infrastructure:

• [x] Reduce size of webapp log files
  • [x] https://github.com/elimu-ai/webapp/issues/1726
  • [x] https://github.com/elimu-ai/webapp/issues/1787
  • [ ] https://github.com/elimu-ai/webapp/issues/1791
• [ ] Reduce webapp's memory consumption
  • [ ] Remove usage of i18n (ReloadableResourceBundleMessageSource)
  • [ ] https://github.com/elimu-ai/webapp/issues/1882
• [ ] Remove local copies of external libraries
  • [x] https://github.com/elimu-ai/webapp/issues/1350
• [ ] Reduce size of webapp database files
  • [ ] Move storage of APK files
  • [ ] Move storage of multimedia files
  • [ ] https://github.com/elimu-ai/webapp/issues/1361
  • [ ] https://github.com/elimu-ai/webapp/issues/1102
  • [ ] https://github.com/elimu-ai/webapp/issues/1077
  • [ ] https://github.com/elimu-ai/model/issues/207
  • [ ] https://github.com/elimu-ai/webapp/issues/895
• [ ] Replace Audio recordings with Text-to-Speech (TTS)
  • [ ] https://github.com/elimu-ai/vitabu/issues/111
  • [ ] https://github.com/elimu-ai/vitabu/issues/102

Software distribution:

• [ ] Reduce the total download size when preparing the learning software on a new device
  • [ ] https://github.com/elimu-ai/webapp/issues/693
• [ ] Improve the speed of releasing updates of the learning software
  • [ ] https://github.com/elimu-ai/appstore/issues/122
  • [ ] https://github.com/elimu-ai/analytics/issues/135
  • [ ] https://github.com/elimu-ai/content-provider/issues/114
  • [ ] https://github.com/elimu-ai/content-provider/issues/90
  • [ ] https://github.com/elimu-ai/content-provider/issues/88
  • [ ] https://github.com/elimu-ai/content-provider/issues/78
  • [ ] https://github.com/elimu-ai/vitabu/issues/92
  • [ ] https://github.com/elimu-ai/herufi/issues/13
  • [ ] https://github.com/elimu-ai/webapp/issues/1792
  • [ ] Reduce the size of the webapp's .war file
• [ ] Prevent bugs from being released to production
  • [x] https://github.com/elimu-ai/webapp/issues/1768
  • [x] https://github.com/elimu-ai/webapp/issues/1767
• [ ] Improve the speed of downloading the learning software
  • [ ] https://github.com/elimu-ai/webapp/issues/670
  • [ ] Appstore: Simplify the steps for downloading content
• [ ] Improve the ease of downloading the learning software
  • [ ] https://github.com/elimu-ai/appstore/issues/236
  • [ ] https://github.com/elimu-ai/appstore/issues/137
  • [ ] https://github.com/elimu-ai/appstore/issues/150
  • [ ] https://github.com/elimu-ai/content-provider/issues/32
  • [ ] https://github.com/elimu-ai/content-provider/issues/31
  • [ ] https://github.com/elimu-ai/vitabu/issues/34
• [ ] Software installation
  • [ ] https://github.com/elimu-ai/launcher/issues/69
  • [ ] https://github.com/elimu-ai/vitabu/issues/39

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Relates to #156