Revert "Disable SAFESEH for Visual Studio 2013"

This reverts commit 562f29374f84b6f446c0242baa221de0a6064f56.
Consistency
another tiny cmake fixes
Expose ShowIME to UI
Leave more space for soft keyboard
Merge pull request #112 from stopiccot/cmake_fixes

CMake fixes
Revamp view angle touch joystick
Add missing pixel ratio scaling
Add wake locks

Prevent CPU from sleeping when connected to a server, hosting one or
watching a demo
Add wake lock to IRC
Remove wake lock stubs from Mac

Mac shares _sys with Unix
Open IME when focusing on text or password input
Touch controls edits
I guess I won't return to this anymore
Check damage crosshair when scoreboard is open
Speeds is an engine thing that shouldn't be affected by game things like scoreboard