new icons for Desktop
Update distribution info for docs

New server hosting the docs, new path on disk.
Unused import.
ExcpetionHandlingIterable no longer uses Unsafe.

It was an ugly hack before, and it's still an ugly hack, but now
it is an ugly hack that does not use the Unsafe. So a small
improvement.

Really though, we should do something about the fact that we expect
checked expceptions through the Iterable methods.
Fixes problems where certain patterns and predicates caused the execution planning to loop forever
Depend on neo4j-browser.
Make neo4j-browser the default web interface.

Webadmin remains accessible at /webadmin, but you need to look for it.
Adds a BreakableFileSystemAbstraction and uses it for TestDirectMappedLogBuffer.

Adds BreakableFileSystemAbstraction which is a FileSystemAbstraction that can
 break in highly customized and interesting ways.
Adds a test in TestDirectMappedLogBuffer which shows how things can break
 when DMLB is reused after an exception in writeOut(). This test rightfully
 breaks and is Ignored.
Depend on org.neo4j.browser:neo4j-browser (moved from org.neo4j.app:neo4j-browser).
Merge pull request #1245 from systay/never-ending-query

Plan building bugfix
org.neo4j.browser is another group that belongs to neo4j.
Remove reference to webadmin, now that neo4j-browser is the default web interface.
Merge pull request #1217 from akollegger/new-icons

new icons for Desktop
Merge pull request #1247 from chrisvest/excheption-rethrow-hack-without-unsafe

ExcpetionHandlingIterable no longer uses Unsafe.
Semantic check for missing parens in pattern

Rather than making it a parse error
Merge remote-tracking branch 'leishman/parens_warn'
Renamed PatternPath to PatternPart and adjust AST hierarchy
Merge pull request #1260 from systay/pattern_ast_refactor

Renamed PatternPath to PatternPart and adjust AST hierarchy
mapping maps of nulls and booleans
Unused imports.