Fix typos, spelling in model comments

Signed-off-by: Alex Coles <alex@alexbcoles.com>
Fix typos, spelling in mailer comments

Signed-off-by: Alex Coles <alex@alexbcoles.com>
Fix typos, spelling in helper comments

Signed-off-by: Alex Coles <alex@alexbcoles.com>
Fix typos, spelling in lib-folder comments

Signed-off-by: Alex Coles <alex@alexbcoles.com>
Merge pull request #1085 from opf/fix/doc-typo-fixes

Fix typos, spelling in comments and docs