Fixed #642 - search: added new checkbox to include transactions from hidden accounts

src/main/java/de/deadlocker8/budgetmaster/search/Search.java

...tmaster/transactions/TransactionSearchSpecifications.java

src/main/resources/languages/base_de.properties

src/main/resources/languages/base_en.properties

src/main/resources/templates/search/searchMacros.ftl

...locker8/budgetmaster/integration/selenium/SearchTest.java

...udgetmaster/unit/TransactionSearchSpecificationsTest.java