Merge pull request #1352 from tiagochst/issue-1312

Closes #1312: 'Edit' from Grader view's ->Annotation Summary view, gives 404 page
Merge pull request #1353 from akittels/issue-1350

Closes #1350: fixed UI of add group button
Merge pull request #1372 from cj343/issue-1360

Closes #1360
Merge pull request #1370 from akittels/issue-1342

Closes #1342 - groups not being rendered under assignment tab
Merge pull request #1384 from beepted/issue-1380

Closes #1380 - Students table updating dynamically
Merge pull request #1349 from davidrd/issue-1338

Closes #1338: grader gets error when trying to access a spreadsheet
Changed version to 1.0-rc1
Merge pull request #1381 from davidrd/issue-1376

Closes #1376 - Created by, Last edited by aren't set when annotation is created in grading view
Merge pull request #1391 from Gerb11/master

Closes #1310 - Created by, Last edited by aren't set when annotation is created in grading view
Merge pull request #1390 from cj343/issue-1378
Merge pull request #1397 from davidrd/issue-1343

Closes #1343 - Showstopper bug in the marks spreadsheet
Updated Changelog for MarkUs 1.0-rc1