working on sort and filter
filter front support
filter query now can merge existed other parameters
improve jquery-query support for turbolink
add basic filter and sort for customer and fund
cuatomer:
  name
fund:
  project, amount, time
update requirement
add hash#direct_fetch and class ArrayRelation
add manage_unit funds, time filter
improve filter front
fixed bugs and add total fund statistic
add fund relate unit, bug fix
add customer donation info
fix bugs
v 0.1.2