Also add missing xf:secret/xf:alert and fix CSS
Support "/" and "/@"
xxf:exists() and xxf:forall(): support $pN variables
Tests: better "find all under element" syntax
#1055 "FR: Publish to production"

- FR Home
  - Select and Operation dropdowns
  - use fluid layout
  - support oxf.fr.production-server-uri
  - ask for credentials when needed
  - list both local and remote forms
  - add all publish operations
- unified save/publish code
  - FB publish
  - Home publish
  - FR Save
- persistence
  - eXist, MySQL, Oracle, DB2: add last modified dateTime
  - eXist: don't list missing docs
Processes: use "xf:show" instead of "dialog" action