1. search method change to GET from POST
2. 販售年份改為款式年份
show car creation time
better format of created time of comments
tmp commit
Refine UI of comments by partial
Merge commit 'b0a271404fefe9719df3f5b651c479aaaee93371' into develop

Refine UI of contributor comments by partial
1. [BF] Fix bug causes generate car with wrong model
2. Add rails admin path
user can leave comments on any models
Merge branch 'feature/user_comments' into develop
Merge branch 'develop'