handle application tag when looking for icon, and add icons for books and book chapters (epub, chm, info)

src/sampleconf/mimeconf

@@ -146,16 +146,16 @@ text/xml = exec rclxml
 ## #############################################
 # Icons to be used in the result list if required by gui config
 [icons]
-application/epub+zip = document
+application/epub+zip = book
 application/msword = wordprocessing
 application/ogg = sownd
 application/pdf = pdf
 application/postscript = postscript
 application/vnd.ms-excel = spreadsheet
 application/vnd.ms-powerpoint = presentation
-application/vnd.oasis.opendocument.text = wordprocessing
 application/vnd.oasis.opendocument.presentation = presentation
 application/vnd.oasis.opendocument.spreadsheet = spreadsheet
+application/vnd.oasis.opendocument.text = wordprocessing
 application/vnd.openxmlformats-officedocument.presentationml.presentation = presentation
 application/vnd.openxmlformats-officedocument.presentationml.template = presentation
 application/vnd.openxmlformats-officedocument.spreadsheetml.sheet = spreadsheet
@@ -175,12 +175,12 @@ application/vnd.sun.xml.writer.template = wordprocessing
 application/vnd.wordperfect = wordprocessing
 application/x-abiword = wordprocessing
 application/x-awk = source
-application/x-chm = document
+application/x-chm = book
 application/x-dia-diagram = drawing
 application/x-dvi = document
 application/x-flac = sownd
 application/x-fsdirectory = folder
-application/x-gnuinfo = document
+application/x-gnuinfo = book
 application/x-gnumeric = spreadsheet
 application/x-kword = wordprocessing
 application/x-lyx = wordprocessing
@@ -211,6 +211,9 @@ image/x-xcf = image
 image/x-xpmi = image
 message/rfc822 = message
 text/html = html
+text/html|chm = bookchap
+text/html|epub = bookchap
+text/html|gnuinfo = bookchap
 text/plain = txt
 text/rtf = wordprocessing
 text/x-c = source