Minor fixes

- Added subtle crosshair bg image
- Fixed preview text color to match default text color
- Update gitignore to ignore more OS files

Signed-off-by: Byron Sanchez <byron@hackbytes.com>
Added search functionality

Signed-off-by: Byron Sanchez <byron@hackbytes.com>
Removed colon from comment preview

It breaks the flow of the style.

Signed-off-by: Byron Sanchez <byron@hackbytes.com>