Merge branch 'develop' into Release_2_9_0b1_Branch

JAL-1894 update release branch from develop

diff --cc examples/appletParameters.html
Simple merge

diff --cc examples/applets.html
Simple merge

diff --cc examples/exampleFeatures.txt
Simple merge

diff --cc help/html/features/columnFilterByAnnotation.html
Simple merge

diff --cc help/html/releases.html
Simple merge

diff --cc src/jalview/api/ComplexAlignFile.java
Simple merge

diff --cc src/jalview/appletgui/AlignFrame.java
Simple merge

diff --cc src/jalview/appletgui/AlignViewport.java
Simple merge

diff --cc src/jalview/appletgui/CutAndPasteTransfer.java
Simple merge

diff --cc src/jalview/gui/AlignViewport.java
Simple merge

diff --cc src/jalview/gui/AlignmentPanel.java
Simple merge

diff --cc src/jalview/gui/AppJmol.java
Simple merge

diff --cc src/jalview/gui/CutAndPasteTransfer.java
Simple merge

diff --cc src/jalview/gui/Desktop.java
Simple merge

diff --cc src/jalview/gui/Jalview2XML.java
Simple merge

diff --cc src/jalview/gui/SeqPanel.java
Simple merge

diff --cc src/jalview/gui/SplitFrame.java
Simple merge

diff --cc src/jalview/io/FeaturesFile.java
Simple merge

diff --cc src/jalview/io/FileLoader.java
Simple merge

diff --cc src/jalview/io/HtmlFile.java
Simple merge

diff --cc src/jalview/io/HtmlSvgOutput.java
Simple merge

diff --cc src/jalview/io/IdentifyFile.java
Simple merge

diff --cc src/jalview/io/JSONFile.java
Simple merge

diff --cc src/jalview/jbgui/GSplitFrame.java
Simple merge

diff --cc src/jalview/util/ParseHtmlBodyAndLinks.java
Simple merge

diff --cc src/jalview/viewmodel/seqfeatures/FeatureRendererModel.java
Simple merge

diff --cc src/jalview/ws/jws1/SeqSearchWSThread.java
Simple merge

diff --cc test/jalview/io/JSONFileTest.java
Simple merge

diff --cc test/jalview/ws/dbsources/PDBRestClientTest.java
Simple merge