[CSharpBinding] Added in text for some keywords.

Added in the form and summary markup for the missing keywords.
[CSharpBinding] Added tooltip for dynamic.
[CSharpBinding] Removed unneeded lines.

Had //done on certain cases to mark progress. Removed.
Merge pull request #492 from TheCommieDuck/master

[CSharpBinding] Added tooltip form and summary text for missing keywords.