Update what javascript returns in case the result is an array. Related to 731
fixed pb doc example (c.f. Issue #679)
adds docs for index_create, index_drop, and index_list
add body for index_drop
Refactor some code
Use inheritance
docs for get_all
docs for between
Turn on ruby tests on travis

Closes #721

Review 481 by @mlucy
lore fixes
fix bad regression 665 test
Merge branch 'next' into sindex_docs

Conflicts:
	test/rql_test/src/regression/665.yaml
get docs validating
Keep __index in __proto__
changes for code review
fixes validation problems
add forgotten .run
increasing the tcp accept backlog due to it being unreasonably low
Enable docs validation on travis

Closes #691

Review 490 by @mlucy
Merge branch '679_pb_docs' into next