fixed crash in api list, added filter support to api list

TODO.md

@@ -4,36 +4,16 @@
 - mime-type => exec app + value
 - add waitgroup to db.go funcs
 - RestList does not support any params?
-- lc() incoming tags+keys
 
 ## DB Structure
 
 - put tags into sub bucket see #1
-- change structure to:
-
-data bucket
-key => {key,value[0:60],isbin:bool}
-
-value bucket
-key => value (maybe always use []byte here)
 
 tags bucket
 key/tag => tag/key
 tag/key => tag
 
-So, list just uses the data bucket, no large contents.
-A tag search only looksup matching tags, see #1.
-Only a full text search and get would need to dig into the value bucket.
-
 A delete would just delete all keys from all values and then:
 lookup in tags bucket for all key/*, then iterate over the values and
 remove all tag/key's. Then deleting a key would not leave any residue
 behind.
-
-However, maybe change the list command to just list everything and add
-an extra find command for fulltext or tag search. Maybe still provide
-filter options in list command but only filter for keys.
-
-DONE: most of the above, except the tag stuff. manpage needs update and tests.
-
-maybe stitch the find command and just add -f (full text search) to list.