Added more custom colors in definition template

Code Editor and Search bar use colors from xshd instead of hardcoded values
Search result only updates background
Added clear markers method.

Clear search markers when we go out of search br
Merge branch 'develop' of github.com:vvvv/vvvv-sdk into develop
Fix Pin isconnected property, only cache flag and get from pluginIO (also on constructor)
Merge pull request #174 from mrvux/develop

Small changes in code editor + xshd