SE-163 Protein coverage column with tests implemented.

...lugin/phosphonetx/client/web/client/application/Dict.java

...ent/web/client/application/columns/ProteinColDefKind.java

...d/openbis/plugin/phosphonetx/client/web/public/index.html

...n/phosphonetx/client/web/public/phosphonetx-dictionary.js

...lugin/phosphonetx/server/business/CoverageCalculator.java

.../plugin/phosphonetx/server/business/ProteinInfoTable.java

...lugin/phosphonetx/server/dataaccess/IProteinQueryDAO.java

...s/plugin/phosphonetx/shared/basic/dto/OccurrenceUtil.java

...nbis/plugin/phosphonetx/shared/basic/dto/ProteinInfo.java

...onetx/shared/dto/ProteinReferenceWithPeptideSequence.java

...n/phosphonetx/server/business/CoverageCalculatorTest.java

...gin/phosphonetx/server/business/ProteinInfoTableTest.java