Set `page.title` instead of `site.title`
Avoid hard-coded title
Should not set `lang` by default
Fix error when tags contain non-ANSI character
Merge pull request #16 from Atry/patch-2

Should not set `lang` by default
Merge pull request #15 from Atry/patch-1

Set `page.title` instead of `site.title`
Merge pull request #17 from Atry/non-ansi-tags

Fix errors when tags contain non-ANSI character
Set mode to 644
Set the same width for all drop-down icons
Merge branch 'theme' into 汉化

Conflicts:
	_includes/default.html
	tags.html