move CommitSummaryUserControl to UserControls folder
Add new UserControl CommitPickerSmallControl
Make FormCreateBranchAtRevision use of CommitPickerSmallControl
GitUICommands: use FormCreateBranchAtRevision instead of FormCreateBranch
CommitPickerSmallControl: fix for case when commithash is empty
Remove old and unused FormCreateBranch.
fix autoscale mode
FormCreateBranchAtRevision: create combobox for orphan controls.
fix tab order and focus
Move FormCreateBranchAtRevision to CommandsDialogs and rename it to FormCreateBranch
Merge pull request #1674 from feinstaub/topic_1575_remove_old_branch_dlg

Fixes #1575 (Remove old "Create branch" dialog)