[bpel-dev] Some fixes

["Danilov, Oleg V" <oleg.v.danilov@xxxxxxxxx>]

Hi,

1. light-bulbs

This patch shows lightbulb indicator near the field as hint that Content
Assist (ctrl-space) is available (including XPath editor)

2. fixed Artifacts generation

Designer generates incorrect code when creating PartnerlinkType in new
Artifacts file:

- missed location attribute
- the inserted Partnerlink has a partnerlinkType with a missing
namespace prefix

3. "Create global partnerlink" wizard allows the user to set partnerlink
role

4 Fixed bug

  1) create a project
  2) go to the source and delete the <variables> element (with all its
     content)
  3) go to the properties of receive (or reply) activity
  4) click on the quick pick to setup the variable attribute of the
element
  The tray shows a variable has been created. 
  Source tab shows there are no any varaibles at all.

5. Fixed variable generation for Reply/Receive/Invoke:

  - Fixed plainLabelWordsFor to use not only direction but also input
object
    to return Response only for Reply variable
  - Added variable name checking for generation. index is appended if
    variable name is already in use
  - Removed generation of input variable for Reply

Thanks,
  Oleg.
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