_coder and ICEcoder no longer part of arrays

These 2 values were originally set to exclude showing ICEcoder based
files in the search results and file manager. However, some users will
install ICEcoder to another dir name, so removed these hardcoded values
from here and excluding in a better way in both instances.
Establish the dir that ICEcoder is running from

Used to exclude from file manager and search results
Exclude the dir ICEcoder is running from

After globalling $docRoot and $ICEcodeDir, work out a $localPath for the
file we have a result for
If our results match, we are looking in the ICEcoder dir and should
exclude as a result
Exclude from FM if its the ICEcoder dir