Add code-signing docs
Add to sysadmins/whatsnew
Add note about code-signing to build-system
Fix typo, rewrite paragraph
Change insight to OMERO.insight
Merge pull request #784 from manics/codesigning_doc

Add code-signing documentation
Adding limitations for 5.0.2
Rewording delete limitation
Remove repetition of the word "files"

This removes repetitive use of "files" in one of the limitations.txt headers.
Fixing typo from changed wording
Merge pull request #790 from bpindelski/patch-2

Remove repetition of the word "files"
Merge pull request #789 from hflynn/limitations-update

Limitations update for 5.0.2