Syncronize VisualEditor: e21b4db..fd0b1d3

Change-Id: I71da922da95eda69d1e724b10b9aeb976c9a97a9
Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  826cee46d0b5cfd571b4f0c2d7b728e0aff89673

Also destroy target when exiting without saving changes

Previously we were only doing this after saving.

Bug: 64032
Change-Id: Ib2c18a79c1ba0c1c7de468961e92e8a41c561cf5