Fix index generation and index entry in TOC
Fix documentation
Use client version in quick start guide
Use short temp file for downloaded plugin ZIPs

If URL for plugin contains parameters, temporary file path can be too
long for the file system. Thus use a short temporary file name.
Prepare 2.0 milestone 4 release
Fix copy-to path2project-uri PI rewrite
Move property files to resources directory

Resources is the standard directory layout location for property files.
Remove XML resolver properties file from configuration JAR
Add data types to PDF XSLT
Add datatypes to XSLT stylesheets
Add trouble note type #1746

This only includes generated text for English.
Initial support for codeblock line numbering #1747
Improve codeblock line number layout #1747
Update reference to renamed folder: `doc` → `docsrc`

See e2ec85bdae4227b32437456b2f518bdc2ada226c.
Add missing @format to external Xrefs
Update Xref text from current IETF BCP 47 doc title

"Tags for Identifying Languages"
Change @type to @format for external Xrefs
Merge pull request #1748 from infotexture/feature/docfixes

Minor updates to documentation source files
Proprocess AHF log #1750

Output AHF log into a temporary file and parse each line to generate log
messages.
Merge branch 'develop' of github.com:dita-ot/dita-ot into develop