Merge pull request #2531 from chrisvest/2.0-merge-1.9

2.0 merge 1.9
Prohibit using more than one hint per identifier
Layout fixes for the manual.

* Resize the logo to fix rendering in Firefox.
* Wrap the book title in a separate element for styling.
* Make the version switcher less confusing.
* Default to hide the TOC on smaller screens.
Merge pull request #2558 from nawroth/manual-layout

 Layout fixes for the manual.
Merge branch 2.0-maint into 2.1-maint

Conflicts:
	community/cypher/cypher-compiler-2.0/src/main/scala/org/neo4j/cypher/internal/compiler/v2_0/ast/Clause.scala
	community/cypher/cypher-compiler-2.0/src/main/scala/org/neo4j/cypher/internal/compiler/v2_0/ast/Hint.scala
	community/cypher/cypher/src/test/scala/org/neo4j/cypher/UsingAcceptanceTest.scala
Merge pull request #2572 from systay/2.0-merged-into-2.1

2.0 merged into 2.1