Create environment fieldset for required and disallowed parameters
Realign Sorting and Pagination
Realign XML Output
Rename labels based on discussion in symphonycms#1587
Fix naming inconsistency
More label simplifications, move 404 redirections to conditions.
Move conditions to top of editor, see Bernardo's comment
Add param suggestions to conditions and pagination
Add filtered AJAX output for environment and data source parameters, remove redundant code
Move grouping to own fieldset, rename output, improve static and dynamic XML layouts
Swap included fields and parameter columns, rename "Fields", simplify context selection (using data attributes)

This commit also fixes #1181
Switch Data Source context based on data attributes
Fixing context based select box options
Merge pull request #2 from nilshoerrmann/datasource-negation

DS Editor