Basic search support
Repaired travis tests, see wiki for installation instructions
Automatically update index (might not be a good idea in production)
Search on landing page working
Minor code cleanup
Fixed travis test
Fixes #69
Splitted requirements into separate files and folders
Forcing recompilation of psycopg2 on Travis, as it holds a broken version in its software repository.
Merge branch 'enhancement-splitted-requirements' into feature-search

Conflicts:
	openreview/requirements/pip/common.txt
Haystack-Elasticsearch breaks isolation of tests. Fixing
merge
Fixes coffeescript for arxiv scraper so fields are populated correctly
Added test for the ArXiv scraper view
Fixes #78
expected_categories are now lazily loaded
Added R/O API
Review API now writable
Added TestCategoryAPI
Account delete feature added, fixes #42
Moved get_bool to apps.tools.string
Added Paper R/W API + hyperlinks GET option