Optimized current token searching

Conflicts:
	Source/IdeEnhancements/CnSourceHighlight.pas
Revert "Improved performance of current token highlight"

This reverts commit f26fedc6a1d9fc81f6baf92a5fe4509929d603a1.

Conflicts:
	Source/IdeEnhancements/CnSourceHighlight.pas
Cleanup non needed string conversions
Implemented option for selecting current token highlight delay
Improved current token delay options editing, fixed incorrect positions of some controls in highlight options editing form