Redesign theme

- Sua doi css cua table, blockquote, codeblock
- Tao trang luu tru moi archives.html liet ke post theo nam
Bai viet

- Cap nhat: markdown, vim tips, jekyll, git
- Bai moi: vim spellchecker
Merge branch 'master' of github.com:tuantda/tuantda.github.io

Conflicts:
	images/git-transport.png
	images/git-workflow.png