Undo Windows manipulations on _head_panel.html.haml

Changed the EOL-style back to LF rather than windows-style CR+LF to make
merges from upstream easier. Also removed executable privilege on file.
Correcting minor change that was missed in merge from 6.1 ustream.

The merge in a02a4835ea3ddc4079b0f49dba26799a7707695f missed the minor
correction from 449edae5aba573943fa048a45d1a78cda9fb13f8 that changed
"Create New Project" to just "New project".