Merge pull request #98 from caiiiycuk/master

Russian guide translation
#98 Aleksander Guryanov is the main author of the Russian version
#98 make clean for Russian
#98 Add link to Russian version
Fix #94 [ja] Translate `i18n`
Fix #95 [ja] Translate `howto`
Fix warning
Fix #96 [ja] Translate `deploy`
Use "sbt/sbt xxx" instead of just "sbt xxx" for consistency
Fix #99 Add guide about installing DCEVM
Fix #100 [ja] Add guide about installing DCEVM
3.17: Update deps.png
New links to support multiple versions of Xitrum Guide Book
[ru] Add guide about installing DCEVM https://github.com/xitrum-framework/xitrum-doc/issues/101