[tell] Fixes #418. Error when not enough args given
Fix 'index out of range' error when no conf files
Say 'I am sending you a private message of all my commands' only if there is not a priv msg yet
Merge pull request #419 from flyte/feature/blank-tell-bug

[tell] Fixes #418. Error when not enough args given
Merge pull request #429 from BOFHers/dev_tmp

Say 'I am sending you a private message of all my commands' only if ther...
Merge pull request #428 from BOFHers/master

Fix 'index out of range' error when no conf files
Fixed type (Thx Marijn)