Doc: rename filter property Fix #747

[danglotb]

This pull request will break all clients that use the property filter.

[coveralls]

Pull Request Test Coverage Report for Build 1915

• 16 of 28 (57.14%) changed or added relevant lines in 3 files are covered.
• 80 unchanged lines in 9 files lost coverage.
• Overall coverage increased (+0.2%) to 85.329%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
dspot/src/main/java/eu/stamp_project/utils/program/InputConfigurationProperty.java	14	18	77.78%
dspot/src/main/java/eu/stamp_project/utils/program/ConstantsProperties.java	1	9	11.11%

Files with Coverage Reduction	New Missed Lines	%
dspot/src/main/java/eu/stamp_project/automaticbuilder/AutomaticBuilderHelper.java	1	95.0%
dspot/src/main/java/eu/stamp_project/utils/program/ConstantsProperties.java	1	40.79%
dspot/src/main/java/eu/stamp_project/test_framework/AbstractTestFrameworkDecorator.java	1	57.14%
dspot/src/main/java/eu/stamp_project/Main.java	4	90.91%
dspot/src/main/java/eu/stamp_project/dspot/selector/ChangeDetectorSelector.java	5	88.64%
dspot/src/main/java/eu/stamp_project/dspot/DSpot.java	7	86.62%
dspot/src/main/java/eu/stamp_project/dspot/selector/JacocoCoverageSelector.java	11	89.71%
dspot/src/main/java/eu/stamp_project/dspot/selector/PitMutantScoreSelector.java	21	86.09%
dspot/src/main/java/eu/stamp_project/utils/program/InputConfiguration.java	29	86.29%

Totals
Change from base Build 1892:	0.2%
Covered Lines:	4554
Relevant Lines:	5337

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💛 - Coveralls