SphinxSearch engine default values uniformisation
Fix search engine suggestions usage
Use phraseanet configuration for sphinx search engine tests
Fix #1411 Cannot cloe alert
Merge pull request #558 from romainneutron/search-engine

[3.8] Search engine fixes
Update media dependencies
Fix #1413 Add possibility to delete a persistent session
Merge pull request #557 from nlegoff/fix_1413

[3.8] Fix #1413 Add possibility to delete a persistent session
Merge pull request #560 from nlegoff/fix_alert

[3.8] Fix #1411 Cannot close alert
Merge pull request #561 from romainneutron/media-dependencies

[3.8] Update media dependencies
Add plugins reset command
Merge pull request #563 from romainneutron/plugins-cleaner

[3.8] Add plugins reset command
Code simplification
Merge branch '3.8'