[enh] add photon engine
[fix] remove useless print statement
[fix] pep8
[fix] pep8
[fix] pep8
[fix] Show map on result in Oscar
Allow to find the leafleet js when searx is not installed at the root of the web server.
Some more path issues
Add double clic on categories
Allow to double clic on any category to activate or deactivate all categories.
[mod] display timeoutted engine name
[fix] handle empty search requests
[mod] better search request exception handling
Merge pull request #152 from pointhi/search_engines

[enh] add photon engine, and fix pep8 errors
[mod][fix] https rewrite refactor ++ fixes
Merge pull request #156 from Cqoicebordel/Fix-map-oscar

[fix][enh] Multiple JS changes in Oscar
Add 500px and Searchcode engines
Allow to search for images on 500px. It doesn't use the official API, but the page result. Less stable, but less API key to possess...

Two engines were necessary for Searchcode because there are to search mode : search for documentation or search for code example. Both use open APIs.
[fix] fix language support in photon engine
Merge pull request #158 from Cqoicebordel/Moar-Engines

Add 500px and Searchcode engines
Merge pull request #159 from pointhi/photon_fix

[fix] fix language support in photon engine
[enh] engine shortcut validation