Merge branch 'master' into stable-5.1

Merge branch 'master' into stable-5.1

* master:
  Restrict visibility of Gitflow menu items
  Focus file list in commit editor
  Cleaned up Gitflow NLS
  Fixed: EGit allows starting features with diverging develop branches
  Fixed: GitFlow test launch config: Added missing dependencies
  Commit editor: Abbreviate parent SHA-1 with 7 characters
  Reorder reflog view context menu
  Fix Findbugs RV_NEGATING_RESULT_OF_COMPARETO
  Minor: Fix Javadoc typos
  NPE in git model synchronization
  Icon for "Stash Changes..." menu
  Have ellipsis at "Create patch" menu
  Sort upstream branch configuration case insensitive
  Update Orbit to S20180829155938 for 2018-09 RC1
  Use new TPD update site

Change-Id: I7a168b6d28fd5d19d57e666d1a4492f2243c46ba
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>