Update tutorial for 0.5.0
Fix css for code-block with lineno does not overflow
Delete tutorial pages that have no sample in example repos
Adjust column width of lineno
Remove unexpect "blockquote" directive
Fix link output
Fix typo (feale -> female, varis -> varies)
Add breakline after punctuation
Fix tutorial classifier java
Fix tutorial classifier java (en)
Fix tutorial classifier ruby
fix some English
Fix tutorial calssifier ruby(en)
Merge branch 'pr_tutorial_0.5.0' of https://github.com/jubatus/website into pr_tutorial_0.5.0
Fix typo
Fix source name
Fix python code style
Improve English version of classifier tutorial
Improve some expression
Improve tutorial regression python (en)