Use utf8 for external encoding in the ruby driver

Fixes Encoding::InvalidByteSequenceError while parsing apps.json
Merge pull request #314 from vzctl/fix-json-utf8

Use utf8 for external encoding in the ruby driver
Merge pull request #1 from ElbertF/master

Merge ElbertF/Wappalyzer into ahug/Wappalyzer
Added Google Charts + edited gravatar

Changed gravatar detection.
Gravatar images are normally loaded by url + hash
google charts image + intercom/gravatar changes
Merge pull request #316 from ahug/master

Added google charts + changed gravatar detection
Optimized shared assets.
Merge pull request #317 from melezov/master

Recompressed images.
Added categories, apps and translations
Merge branch 'master' of github.com:ElbertF/Wappalyzer
Add Silva cms app
add Silva cms app
Merge pull request #318 from wimbou/master

Added Silva CMS app
Improve PrestaShop detection

In the latest versions of PrestaShop the powered by link looks like this: <a class="_blank" href="http://www.prestashop.com" target="_blank">PrestaShop</a>, so the current RegExp fails!

This one is more generic: /Powered by <a\s+[^>]+>PrestaShop/
Merge pull request #322 from djfm/master

Improve PrestaShop detection
Added the Lift web framework and Scala which is implied by it
Merge pull request #329 from melezov/master

Added the Lift web framework and Scala which is implied by it
Makes Twitter Bootstrap test more restrictive

This should stop a lot of false positives for Twitter Bootstrap.
It ensures that the CSS clause is within a `href` attribute of a `<link>` tag and also that the only things between 'bootstrap' and '.css' is an optional `.min`.
Ignore `driver/` copies of `share/` folder data

- Update Bash linkers to link the entire folder
CKEditor doesn't imply PHP anymore