Merge remote-tracking branch 'upstream/master' into sharelatex

* upstream/master: (22 commits)
  Improve SyncLang.py (#3184)
  Config intellj code style to adhere to empty lines checkstyle rule (#3365)
  Don't list same look and feels more than once (#3393)
  progessdialog and result table are now shown correclty on copy files
  Export pdf/linked files  (#3147)
  Added checking integrity dialog (#3388)
  Update richtext and flowless (#3386)
  Source tab: hide notification pane when code is correct again (#3387)
  Titles are optional at crossref (#3378)
  Update entry for every change in the source panel (#3366)
  Rework AutoSetFileLinks (#3368)
  revert wrongly commited changes
  Refactorings (#3370)
  Fix freezing when running cleanup file operations like rename (#3315)
  This additional style setting for IDEA (#3355)
  Fix checkstyle
  Add proper equals to content selector
  Delete unused code
  Extract difference finder from gui to logic
  Remove unnecessary EntrySorter
  ...

# Conflicts:
#	src/main/java/org/jabref/gui/entryeditor/SourceTab.java

CHANGELOG.md

@@ -23,9 +23,10 @@ We refer to [GitHub issues](https://github.com/JabRef/jabref/issues) by using `#
 - We now set the WM_CLASS of the UI to org-jabref-JabRefMain to allow certain Un*x window managers to properly identify its windows
 - We changed the default paths for the OpenOffice/LibreOffice binaries to the default path for LibreOffice
 - We no longer create a new entry editor when selecting a new entry to increase performance. [#3187](https://github.com/JabRef/jabref/pull/3187)
+- We added the possibility to copy linked files from entries to a single output folder [#2539](https://github.com/JabRef/jabref/pull/2593)
 - We increased performance and decreased the memory footprint of the entry editor drastically. [#3331](https://github.com/JabRef/jabref/pull/3331)
 - Late initialization of the context menus in the entry editor. This improves performance and memory footprint further [#3340](https://github.com/JabRef/jabref/pull/3340)
-
+- We added a dialog to show that JabRef is working on checking integrity. [#3358](https://github.com/JabRef/jabref/issues/3358)
 
 ### Fixed
  - We fixed the translation of \textendash in the entry preview [#3307](https://github.com/JabRef/jabref/issues/3307)
@@ -36,7 +37,11 @@ We refer to [GitHub issues](https://github.com/JabRef/jabref/issues) by using `#
  - We fixed an issue where JabRef would freeze when trying to replace the original entry after a merge with new information from identifiers like DOI/ISBN etc. [3294](https://github.com/JabRef/jabref/issues/3294)
  - We fixed an issue where JabRef would not show the translated content at some points, although there existed a translation
  - We fixed an issue where editing in the source tab would override content of other entries [#3352](https://github.com/JabRef/jabref/issues/3352#issue-268580818)
-### Removed
+ - We fixed several issues with the automatic linking of files in the entry editor where files were not found or not correctly saved in the bibtex source [#3346](https://github.com/JabRef/jabref/issues/3346)
+ - We fixed an issue where fetching entries from crossref that had no titles caused an error [#3376](https://github.com/JabRef/jabref/issues/3376)
+ - We fixed an issue where the same Java Look and Feel would be listed more than once in the Preferences. [#3391](https://github.com/JabRef/jabref/issues/3391)
+
+ ### Removed
 
 
 

build.gradle

@@ -105,8 +105,8 @@ dependencies {
  compile 'de.jensd:fontawesomefx-materialdesignfont:1.7.22-4'
  compile 'de.saxsys:mvvmfx-validation:1.7.0'
  compile 'org.fxmisc.easybind:easybind:1.0.3'
- compile 'org.fxmisc.flowless:flowless:0.5.2'
- compile 'org.fxmisc.richtext:richtextfx:0.7-M5'
+ compile 'org.fxmisc.flowless:flowless:0.6'
+ compile 'org.fxmisc.richtext:richtextfx:0.8.1'
 
  // Cannot be updated to 9.*.* until Jabref works with Java 9
  compile 'org.controlsfx:controlsfx:8.40.14'