CS
add field "stem" to task cindexer
fix "parameter by reference"
stemming : add current locale to phrasea_query2(..., lng)
stemming only if requested in advanced search
added popup for option --sort-empty
fix tests for phrasea engine stemming
Revert "fix tests for phrasea engine stemming"

This reverts commit 3f312402b7487f257cff99266479ba0237904d33.
fix tests for phrasea engine stemming
Merge pull request #285 from jygaulier/snowball

[3.8] Snowball implementation in Phrasea SearchEngine
fix #1095 : task archive crashed
Add UrlGenerator helpers in Application

two new methods are available :

`Application::path` that returns an absolute path
`Application::url` that returns an absolute url
Merge pull request #311 from romainneutron/generator

[3.8] Add UrlGenerator helpers in Application
Refactor reports into silex controllers

Refactor reports into silex controllers