Restoring fix for RUBY-14390
NPE fix
[log] Disable the assertion until properly fixed.
[log] Don't wait under a modal progress until the log is loaded & built

The action inside model progress is executed in EDT,
which may lead to a deadlock, if showFullLog makes something like
invokeAndWait (what it actually does).

Let it just do nothing and jump to the commit when the log is loaded.

A better fix would be to introduce some less-modal progress like
JBLoadingPane (and use it for other possibly long running operations
as well).
[log] turn new Git log on by default
code style
new inference: method refs: do not provide raw substitutor when containing class provides empty one
method refs: separate ::new now in api
ensure junit_rt class version for community
lambda: skip wildcards in return types for now
new inference: simplification
IDEA-115660 Fix Spock library in Create test dialog does not work