Put back <resource-ref>
- It isn't necessary with Tomcat.
- But is necessary with other app servers, including JBoss.
Remove default in code to allow a property value to be ""
 - Otherwise, the default non-empty value is used.
 - In general, we don't want defaults to be in the code, but in properties.
Forwarding cookies isn't necessary since we use internal requests
- And this causes strange issues with eXist creating data as admin/dba.
Minor: some rewrite for clarity
Owner/group permission for eXist, fix #1341
IntelliJ project files
Indent
Don't default to passing JSESSIONID and JSESSIONIDSSO

- internal requests remove need for this
For #1846: send control values
Generate schema 1.0 when possible, fix #1943
For #635: Data migration

Philosophy:

- for now we don't change the database format
- upon publishing or upgrading form definitions, embed migration information
- upon read/write of form data, convert to/from new format

Changes:

- migration functions
  - gather migration map for a form definition
  - based on migration map, convert data between formats
  - unit tests
- Form Builder
  - store migration map into metadata upon publish when needed
- Form Runner Home
  - also store migration map upon upgrading
- Form Runner persistence
  - convert data upon reading when needed
  - convert data upon writing when needed
- form-to-xbl.xsl places id and ref on bind
- code to find model/body element works on section templates
- add XMLNames
- rename .qname -> .uriQualifiedName
- fix byId() in case there is no native map
- newConfiguration uses global DocumentNumberAllocator
  - Saxon checks this on occasion and we just hit a case
  - hoping there is no big drawback having a global allocator
- add extractAsMutableDocument()
- indentation
Merge branch 'master' of https://github.com/orbeon/orbeon-forms into postgresql