Deprecate Lucene

.. use a simple free text search against the ridecache now we
   have all the texts available and in memory

.. no need to maintain an index, no dependency on a horrid lib
   with nasty dependencies and its faster too

.. the free text search is very simple, will need to bolster it
   over time e.g. it matches text not words

src/GcCrashDialog.cpp

@@ -55,10 +55,6 @@
 #include "kqoauthmanager.h"
 #endif
 
-#ifdef GC_HAVE_LUCENE
-#include "Lucene.h"
-#endif
-
 #ifdef GC_HAVE_WFAPI
 #include "WFApi.h"
 #endif
@@ -244,12 +240,6 @@ QString GcCrashDialog::versionHTML()
     vlc = "yes";
     #endif
 
-    // -- LUCENE ----
-    QString clucene = "none";
-    #ifdef GC_HAVE_LUCENE
-    clucene = _CL_VERSION;
-    #endif
-
     #ifdef GC_HAVE_WFAPI
     QString wfapi = WFApi::getInstance()->apiVersion();
     #else
@@ -292,8 +282,7 @@ QString GcCrashDialog::versionHTML()
             "<tr><td colspan=\"2\">LIBUSB</td><td>%11</td></tr>"
             "<tr><td colspan=\"2\">Wahoo API</td><td>%12</td></tr>"
             "<tr><td colspan=\"2\">VLC</td><td>%13</td></tr>"
-            "<tr><td colspan=\"2\">LUCENE</td><td>%14</td></tr>"
-            "<tr><td colspan=\"2\">VIDEO</td><td>%15</td></tr>"
+            "<tr><td colspan=\"2\">VIDEO</td><td>%14</td></tr>"
             "</table>"
             )
             .arg(QT_VERSION_STR)
@@ -309,7 +298,6 @@ QString GcCrashDialog::versionHTML()
             .arg(libusb)
             .arg(wfapi)
             .arg(vlc)
-            .arg(clucene)
 #ifdef GC_VIDEO_NONE
             .arg("none")
 #elif defined GC_VIDEO_QUICKTIME