Fixed RM #1209 Trigger issues through right click

Hi All

While fixing RM #1209 I have found following of issues, that I have fixed
as part of RM #1209

- Trigger function is not displayed in the combo box for edit mode.
- Change the font of the "fieldset > legend" from 16px to 14px in
overrides.css, as it doesn't looks good.
- When user set constraint trigger to "Yes" then Fires should be set to
"AFTER", which is fixed.
- Code tab is always disabled and empty. User won't be able to
see/update the code for PPAS when Trigger function is "Inline EDB SPL".
This issue is mentioned in the RM #1209.

Attached is the patch file, please review it and let me know the review
comments (if any)

--
*Akshay Joshi*
*Principal Software Engineer *

*Phone: +91 20-3058-9517Mobile: +91 976-788-8246*