Fixes #540.
Was already merged in Bitbucket before import, marked as merged by the import user
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Starting '2.5.0' branch.
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Fixed warnings about resources management with try-with-resources.
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Fixed some warnings about strings not being translated.
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Changed formatting preference to format the entire file on save.
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Fixed deprecation warnings related to property pages.
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Trimmed trailing spaces.
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Converted Patch action set to a toolbar due to the deprecation notice of actions sets.
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Converted team ("Mercurial") action set to a toolbar due to the deprecation notice of actions sets.
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Fixed a deprecation warning.
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Fixed warnings about "generic types Class should be parameterized".
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Changed the wording of a few sentences.
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Harmonized naming conventions back to the Patch toolbar/action set.
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Overhaul of UI elements (commands, handlers, etc.) defined in plugin.xml: refactoring in order to remove deprecated APIs.
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Changes for dealing with deprecation notices.
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Removed classes contributed to org.eclipse.core.resources that were used for supporting old Eclipse APIs.
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Fixed Checkstyle warnings about star imports.