show all in project interpreter combobox regardless virtualenv association
update notifications about not installed pip/setuptools
IDEA-80056 Column selection mode improvement

small API change, as per review
IDEA-80056 Column selection mode improvement

small API change, as per review - partial revert
diff: do not call read action to access to local read-only document
diff: @Nullable
diff: ask to show content of equal files
diff: do not fail completely on by-word comparison of two extremely big lines
github: add assertion
diff: add generics
diff: rename action
IDEA-120993 diff: fix diff range calculation in case of newline at the beginning of file

In case of empty range of one side we must return TextRange(n, n-1).

Previously, it was made by correctRangeEnd():
begin/end offsets are at the start of the same line -> we shift end one char backwards (because previous symbol is "\n") -> we got what we want
But in case of first line there are no "\n" that will move us from 0 line to -1 (because this is beginning of file).
IDEA-121050 diff: fix typo
diff: fix action name
looks like there are a lot of clients assuming default JTable scrollable viewport size (450x400)
WebBrowserManager API post review
Move GroovyImporter back to org.jetbrains.idea.maven.importing , bacause it used from some plugins.
remove association if vEnv associated with different project was selected
grab focus in show all action from interpreter combobox
Merge remote-tracking branch 'origin/master'