Migrate our templating engine from Smarty to Twig

[mattab]

Smarty was nice, but now Twig is the real deal, and we would love to migrate to Twig.

As part of Piwik 2.0, as we increase the minimum PHP version to 5.3, we can now use Twig.

Thanks to the amazing work by @halfdan this is becoming a reality!

[mattab]

In 0ddd15a: Removing final |raw from codebase
Refs #4019

[mattab]

In 7bbf305: Reverting my commit where I removed all |raw per @halfdan feedback
Instead we should manually add the missing |raw...
Refs #4019

[mattab]

In 5aa8081: adding more |raw
Refs #4019

[mattab]

In 4d57c02: adding more |raw
Refs #4019

[mattab]

In 6ac63c2: * Fixing SitesManager page

• Enabling debug on twig so we can use {{ dump(var) }} function
  Refs Migrate our templating engine from Smarty to Twig #4019

[mattab]

In 4487ee6: * Fixing Users manager
Refs #4019

[mattab]

In 0232067: * Fixing Users manager
Refs #4019

[mattab]

In 99fa74d: * Fixing over escaping
Refs #4019

[mattab]

In 8f6d151: * Adding htaccess to allow loading SVG+PNG logos on Settings page
Refs #4019

[mattab]

In 12e81ae: * admin screens,

• removed the remains of CDN/jquery feature
  Refs Migrate our templating engine from Smarty to Twig #4019

[mattab]

In b8b0269: * Some more fixes
Refs #4019

[mattab]

In 97149fb: * Visitor log page tooltips
Refs #4019

[mattab]

In 62bba50: * Fixing overlay
Refs #4019

[mattab]

In 55f2efd: * Live
Refs #4019

[mattab]

In b814322: Removing Smarty strings from codebase, fixing install
Adding twig to LEGALNOTICE
Refs #4019

[mattab]

In 60e3b96: * removing most mentions to "tpl"
Refs #4019

[mattab]

In a62f1c1: * Converting CLI templates to twig

• deprecating View::factory, simplify constructor
  Refs Migrate our templating engine from Smarty to Twig #4019

[mattab]

In 6aee04b: * Fix concats
Refs #4019

[mattab]

In 6355922: * Fix the SEO widget
Refs #4019

[mattab]

In affa786: * Removing |count as I didn't notice |length was already used
Refs #4019

[mattab]

In 63aa1de: * Cell used to be "spaceless" so restoring, just in case this could cause hidden regression...
Refs #4019

[mattab]

In 28b9f12: * During the big merge I noticed some code was duplicated in userCountry.js
Refs #4019

[mattab]

In 84bf3a5: * themes or plugins should not have the php requirement in JSON, it should only be in "Piwik installation check".
... unless some non-core plugins would indeed require more recent than 5.3 (but core plugins will always work if Piwik was successfully installed)
Refs #4019

[mattab]

In 9168480: * Enabling Twig 'strict_variables' so that we write best code possible, and learn early if some tpl code is not valid. Fixing few bugs that this uncovered

• refactoring the percent column label in getPercentVisitColumn()
• removing indexBeforeMenu and putting directly in parent template
  Refs Migrate our templating engine from Smarty to Twig #4019

[mattab]

In 7bae344: * Restoring the cache buster output filter which was lost at some point
Refs #4019

[mattab]

In 00ef553: * Enabling templates compiled cache. @halfdan, was there any reason it was disabled?
Refs #4019

[mattab]

In 1b35b77: * Fixing some missing |raw using global search {{.<{1,}.}}
Refs #4019

[mattab]

Twig support is now fully working. awesome!