[Fuze+][lang] keymaps hint update

A few keymaps hint were wrong, this correct them:
- database/filemanager on cancelling songs insertion
- alarm clock
- set alarm

Change-Id: Ifb50a9452c208a7d5c28bdac96c825030b943c25
Reviewed-on: http://gerrit.rockbox.org/508
Reviewed-by: Amaury Pouly <amaury.pouly@gmail.com>

apps/lang/srpski.lang

@@ -3962,6 +3962,7 @@
     iaudiox5,iaudiom5: "RECORD = Revert"
     iriverh10,iriverh10_5gb,sansae200*,sansafuze*: "PREV = Revert"
     gigabeatfx: "POWER = Revert"
+    sansafuzeplus: "BACK = Revert"
     mrobe100: "DISPLAY = Revert"
     gigabeats: "BACK = Revert"
     gogearsa9200: "LEFT = Revert"
@@ -3976,6 +3977,7 @@
     iaudiox5,iaudiom5: "RECORD = Врати на старо"
     iriverh10,iriverh10_5gb,sansae200*,sansafuze*: "PREV = Врати на старо"
     gigabeatfx: "POWER = Врати на старо"
+    sansafuzeplus: "BACK = Врати на старо"
     mrobe100: "DISPLAY = Врати на старо"
     gigabeats: "BACK = Врати на старо"
     gogearsa9200: "LEFT = Врати на старо"
@@ -4510,6 +4512,7 @@
     gigabeats: "SELECT=Set POWER=Cancel"
     vibe500: "OK=Set C=Cancel"
     mpiohd300: "ENTER=Set MENU=Cancel"
+    sansafuzeplus: "SELECT=Set  BACK=Cancel"
   </source>
   <dest>
     *: none
@@ -4519,6 +4522,7 @@
     gigabeats: "SELECT=Постави POWER=Одустани"
     vibe500: "OK=Постави C=Одустани"
     mpiohd300: "ENTER=Постави MENU=Одустани"
+    sansafuzeplus: "SELECT=Постави  BACK=Одустани"
   </dest>
   <voice>
     *: none
@@ -8064,6 +8068,7 @@
     iriverh10,iriverh10_5gb,sansae200*,sansac200*,vibe500: "PREV to abort"
     gigabeats: "BACK to abort"
     gigabeatfx: "POWER to abort"
+    sansafuzeplus: "BACK to abort"
   </source>
   <dest>
     *: "OFF to abort"
@@ -8073,6 +8078,7 @@
     iriverh10,iriverh10_5gb,sansae200*,sansac200*,vibe500: "PREV за прекид"
     gigabeats: "BACK за прекид"
     gigabeatfx: "POWER за прекид"
+    sansafuzeplus: "BACK за прекид"
   </dest>
   <voice>
     *: ""