remove hgroup from html5 tags
IDEA-122358 Push should use 'default' path by default

*setSelectedItem method used instead of setText for repository url default path, because appropriate combobox editor may be not initialized yet.
IDEA-122310 Hg: "push as new remote branch" should not require selected  "Branch" checkbox
Current branch preselected in Push Dialog
PY-12374 (JRE-w/o-JDK detection in startup script)
IDEA-122377 (do not show plugin error dialog in tests)
Bug fix: Don't pass unresolved properties to command line