IDEA-83168 Gradle: changes in a project layout (content roots) could be detected on Refresh
Github: use DocumentAdapter
Github: add @NotNull
Github: return null on null
Github: code review fix
Github: remove cause we don't use Username
Github: move uri creation
Github: use actual value instead of hardcoded
Revert "Github: do not add in popup branches in existing of that we don't sure"

This reverts commit 247874599cfe809efe142de3be65bedbdf8f902e.