Upgraded to CEFSharp 1.25.7; may also fix #32

This reverts commit b3d6d693aa0b9b2b009d152b2c69c02f171311eb.

Add preliminary hardline support
Switch Minifier to to Web Essentials 2
Add backend for Hardline support
Add frontend EXE for preliminary Hardline support
Fix Hardline Javascript
Add debug code to show cef developer tools
Merge pull request #40 from ron975/2.1-hardline

2.1 hardline