cache: add djb2 manager with a couple hashes dumped from the client

cache/src/main/resources/djb2.properties

@@ -0,0 +1,31 @@
+#Mon Apr 03 10:30:23 EDT 2017
+3327403=logo
+950484242=compass
+-1773559904=title_mute
+755433248=headicons_pk
+-342013218=p11_full
+837204902=mapdots
+417793574=scrollbar
+-1154558416=sl_arrows
+1057075019=b12_full
+2110231453=mod_icons
+1170407052=headicons_prayer
+-1544597765=sl_stars
+837223705=mapedge
+-1335336992=logo_deadman_mode
+1120933843=scape main
+1956141538=options_radio_buttons,2
+1258058669=huffman
+1956141536=options_radio_buttons,0
+1639695510=mapmarker
+108875897=runes
+-2136884405=title.jpg
+121641580=headicons_hint
+947464074=titlebutton
+-2128560371=sl_back
+-1556842207=sl_flags
+-1123094568=sl_button
+94935104=cross
+197029040=mapscene
+-1869996941=titlebox
+628358452=mapfunction