Add recoll engine (#2325)

recoll is a local search engine based on Xapian:
http://www.lesbonscomptes.com/recoll/

By itself recoll does not offer web or API access,
this can be achieved using recoll-webui:
https://framagit.org/medoc92/recollwebui.git

This engine uses a custom 'files' result template

set `base_url` to the location where recoll-webui can be reached
set `dl_prefix` to a location where the file hierarchy as indexed by recoll can be reached
set `search_dir` to the part of the indexed file hierarchy to be searched, use an empty string to search the entire search domain

1 files changed, 19 insertions, 0 deletions

diff --git a/searx/static/themes/oscar/less/logicodev/results.less b/searx/static/themes/oscar/less/logicodev/results.less
index 9926d6e53..33965fb33 100644
--- a/searx/static/themes/oscar/less/logicodev/results.less
+++ b/searx/static/themes/oscar/less/logicodev/results.less
@@ -51,6 +51,11 @@
     float: right;
 }
 
+.result-abstract {
+    margin-top: 0.5em;
+    margin-bottom: 0.8em;
+}
+
 .external-link {
     color: @dark-green;
     font-size: 12px;
@@ -124,6 +129,20 @@
     }
 }
 
+.result-metadata {
+    clear: both;
+    margin: 1em;
+
+    td {
+        padding-right: 1em;
+        color: @gray;
+    }
+
+    td:first-of-type {
+        color: @dark-gray;
+    }
+}
+
 // map formating of results
 .result-map {
     clear: both;