Fixed #134 Account property filter modification improvement

[rg911]

Issue: #134

• Moved filter modification creation out of AccountPropertyTransaction.

• Modification class is AccountPropertyModification

• Now support both constructor creation and static method creation.
  new AccountPropertyModification(PropertyModificationType, T)

  or
  
  AccountPropertyModification.createForAddress(PropertyModificationType, Address)
  AccountPropertyModification.createForMosaic(PropertyModificationType, Mosaic)
  AccountPropertyModification.createForEntityType(PropertyModificationType, entityType)
  

[coveralls]

Pull Request Test Coverage Report for Build 363

• 4 of 4 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.5%) to 79.703%

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Totals
Change from base Build 352:	0.5%
Covered Lines:	1504
Relevant Lines:	1773

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💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 363

• 4 of 4 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.5%) to 79.703%

---

Totals
Change from base Build 352:	0.5%
Covered Lines:	1504
Relevant Lines:	1773

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 371

• 4 of 4 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.009%) to 79.703%

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Totals
Change from base Build 370:	-0.009%
Covered Lines:	1504
Relevant Lines:	1773

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💛 - Coveralls