added a notice feature to the posting

fix
Merge pull request #10 from keesun/HIVE-47

#HIVE-47 added a notice feature to the posting
Merge pull request #11 from doortts/working

[HIVE-44] 패스워드 리셋 기능 추가, [HIVE-133] 회원가입 툴팁 버그
issue,posting: Fix a potential bug about numbering

The value of number field can increase inadvertently by calling of
save() method. To fix that:
* Save() method increases value of number field if only it is null.
* Set the visibility of number field to protected.
issue,posting: Fix constraint violation of number.

Every issues and postings must have unique (project_id, number) pair.
Insert initial data only if in test mode.
test: Use volatile memory database.
Insert essential data the first time hive runs.
issue,posting: Fix a bug about deleting permission

Author can delete own issue or posting regardless of config
Fix constraint violation by test-data.yml.

* In test-data.yml, Remove entities already added by initial-data.yml.
* Make Global.insertTestData insert "users" entities.
fix signup form: id dup detection bug

see HIVE-144
+ some cleanup action
test: divide case and add suitable tests
Merge branch 'master' of github.com:nforge/hive

Conflicts:
	app/controllers/UserApp.java