[NOISSUE]remove placeholder js from all pages except login page, it
maybe effect the pagination or other js submit operation.
[NOISSUE]
1. add validation of duration if save or start test.
2. if duration or runcount is invalid at save or start time when it
isn't be selected, will be set with max value or 0.
3. change the validation when change duration setting.
Merge branch 'master' of https://github.com/nhnopensource/ngrinder.git
[NGRINDER-384]Unit tests, code coverage
[NGRINDER-471]Run a test by admin(test1), return, check
report-in-detail,error happened
[NGRINDER-468]Deleted a script used by finished test, clone this test
with other script, revision is wrong.
[NOBTS] there is error in perf_test column name,so rename it.
and because liquibase not support cubrid syntax and then create
NGrinderRenameColumnGenerator to replace RenameColumnGenerator
Merge branch 'master' of https://github.com/nhnopensource/ngrinder.git
[NOBTS]create NGrinderRenameColumnGenerator to replace
RenameColumnGenerator
[NOBTS]NGrinderRenameColumnGenerator to replace RenameColumnGenerator
[NGRINDER-384] Unit tests, code coverage
[NGRINDER-474]Search keywords alphabetic case consistency for
perf_list/user_list/script_list.
[NOBTS] it is not necessary add '\\' before '_'
at startWithRegion() AgentManagerSpecification
[NOBTS]change NGrinderRenameColumnGenerator package
[NOBTS] Add Unit Test on region search
[NOBTS] Rename Generators from NgrinderBlarBlar..
[NOBTS] Add docs
[NGRINDER-465] Make the lock contention period short by loading/saving
bytes first.
[NGRINDER-474] Make it searchable ignoring cases.
[NOBTS] 
- Make the mean time to first byte chart visible
- Fix the missing chart interval problem (in report )