Merge pull request #271 from nlegoff/fix_1002

[3.8] Fix #1002 Issue withe redirect uri parameter
Merge branch '3.7'
Fix set_export::stream_file
Temporary fix, waiting for UnicodeServiceProvider
Downgrade symfony 2.1 a few version until Silex fix BC break
Fix tests
Update Doc links
Merge branch '3.7'
Merge pull request #283 from nlegoff/fix_1050

Add save icon & refactor feed_option toolbar
Bump to version 3.7.5
Merge branch '3.7'
fix rewriterule
prepare dbox for snowball to come in 3.8
Merge pull request #284 from jygaulier/pre_snowball

[3.7] prepare dbox for stemming to come in 3.8
Merge branch '3.7'
fix #1073 #1074
Update .travis.yml
removed extra parenthesis
[SearchEngine] Fix files mode
[SearchEngine] Fix files mode