fix pp index, for #224
dataset approval color legend: better wording. for #238
fix for fix pp index. for #224
visitors can see published paperproposals. for #253, #105
paperproposal: visitors can only see essential freeformats, but not download. for #224, #105
fix for paperproposal show acl9. tests run again.
Don't display datagroups's methodvaluetype, instrumentation, informationsource. issue #249, #257
limit edit form for paperproposal authors after it's approved. for #243
+ download a CSV of dataset feeformats. for #229
remove comment field from sheetcells. for issue #256
Test for uploading a workbook with duplicated column names. for issue #232
+ Add accept_invalid_values function to database. related to issue #192 #186
Allow batch approve invalid values. issue #192 #186
Update .travis.yml
+ basic notification model by scaffold. for #236
+ notifications basics: controller actions, routes, user dependency. also slimmed down. for #236
notifications: + basic haml view & css & acl9. for #236
simple and functional notifications interface for users. for #234
wording votes to datarequests. for #214
preparing to use mailer with notification (mailer.yml need from now on), for #234 Inform paperproposal authors about rejection, for #237