Корень удаления

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* 1.6: Fix minor bug about Sort.
* 2.5.1:
- Add function remove system apps.
- Upgrade UI to separate sytem apps and user apps.
- Add function BACK UP apk to SDCARD.
* 2.5.8:
- Fix minor bug.
* 2.6 : Improve performance.
* 2.6.5 : Fix minor bug for Sony Ericsson devices.
* 2.10.15 : Improve UI & fix bug for device with have android version smaller than 14.