prevent null pointer exception when fetching project list from server with some undefined project types
rhbz870876 allow download of single-locale config file from locale documents page
rhbz870876 revert config download on version page to give only default config

    Partially reverts 7a3ff69e5df5262d5d5bcbc89c1a2b4670b06bff

    Offline-translation config file is now available on locale-documents
    page instead.
rhbz870876 update label and tooltips for offline translation config files
rhbz870876 use offlinepo when appropriate in gwt doclist download links
rhbz870876 prevent null server url in config in zip package from gwt document list
remove unused injection
fix failing tests
rhbz870876 improve buttons for zip preparation on gwt doclist
Merge branch 'integration/master' into rhbz923461

Conflicts:
	zanata-war/src/main/java/org/zanata/webtrans/client/resources/WebTransMessages.java
	zanata-war/src/main/java/org/zanata/webtrans/client/view/DocumentListView.java
	zanata-war/src/main/java/org/zanata/webtrans/server/rpc/GetDocumentListHandler.java