[Bug fixs]TDIS-6132, Added default dbcontent.xml.
Fixed the error of "Failed to load resource".
Merge pull request #249 from jacobchen/next

[Bug fixes] TDIS-6439, Removed application related code.
[bug fix] TDIS-5974 - Change TZDate constructor for instanceof operator
[bug fix] TDIS-5974 - fix TimeDuration constructor for instanceof
[bug fix] TDIS-5974 - Fix undefined symbols related to the bug
[bug fix] TDIS-5974 - about calendarAlarm
- fix issue about "dueDate" changing
- fix issue about instanceof issue of SimpleCoordinate
Merge pull request #248 from lpguo/next

[Bug fixs]TDIS-6132, Added default dbcontent.xml.
Merge pull request #250 from DonnaWuDongxia/next

[bug fix] TDIS-5974 - about calendarAlarm
[Contact] fix bug on addBatch function()

* the root cause is that attribute of contact in parameter is not
  set.
[Contact] fix bug on removeGroup() function

* the root cause of is that splice function() used wrongly.
[ContactRef] fix bug: ContactRef constructor logic issue
[ContactRef] fix bug: ContactRef intanceOf function
[ContactBase] fix bug on convertToString()

* A string should be returned by default
* check whether format is VCARD_30
Merge pull request #251 from xuzhang/dev

fix bug TDIS-5812
fixed wrong declaration
[bug fix] TDIS-6405 use panel message instead of pop up message when radio is off.
Fix cross frame Date instanceof problem

When a date object is created in another frame, instanceof Date
doesn't return true. To solve this, we inject the Date function
into the device iframe.
Merge pull request #253 from zhizhangchen/fix-cross-frame-date-instanceof-problem

Fix cross frame Date instanceof problem
[bug fix] TDIS-5974 - adjust default value of properties in CalendarItem
Merge pull request #256 from DonnaWuDongxia/next

[bug fix] TDIS-5974 - adjust default value of properties in CalendarItem