Merge pull request #91 from chrisshayan/Release9

Release9 is live now on http://techlooper.navigosgroup.com:8080/techlooper/index.html
Add expiredDate to query
Fix expiredDate
Merge commit '8bc590d2393e44b650d4508b8e763ed05442f864'

Conflicts:
	src/main/java/com/techlooper/service/impl/JobQueryBuilderImpl.java
	src/main/java/com/techlooper/service/impl/VietnamWorksJobStatisticService.java
Fix type inference
Add some comments
Remove comments
add back page for the logo on search page
Merge commit '1bc0738b4bb9cb4af091544306af44530b4dc3ee'
Merge branch 'master' of https://github.com/johnsonpham/TechLooper
Use Optional as JDK 8 supports us
Merge commit '1a9a5e1f6326c3ab47a1748241de3f38561d319c'
Merge commit '63fa78be1acad71c57956ea30bb730937bfec950'
Apply stream API to histogramEnums
Refactor com.techlooper.service.impl.VietnamWorksJobStatisticService#countJobsBySkill
Change some function names in com.techlooper.service.impl.VietnamWorksJobStatisticService
Add Default Action (enter key) to search job screen
update js for line chart
Merge commit 'b67b1f048292b812c593d6dab267de5460d164db'
Merge pull request #92 from phuonghuynh/master

Some improvements on R9