[fix bug 854379] Hide 'categories' label when event has no categories.
Merge pull request #370 from glogiotatidis/854379

[fix bug 854379] Hide 'categories' label when event has no categories.
[fix bug 855991] Add missing space to report added email.
Merge pull request #372 from glogiotatidis/spacemissing

[fix bug 855991] Add missing space to report added email.
[Fix bug 854928] Show events on mozillians dashboard matching tracked areas
[fix bug 856560] Fix typo.
Merge pull request #376 from glogiotatidis/typo

[fix bug 856560] Fix typo.
[Fix bug 851259] Fix order of past events in user profile page
Merge pull request #377 from johngian/851259

[Fix bug 851259] Fix order of past events in user profile page
Merge pull request #373 from johngian/854928

[Fix bug 854928] Show events on mozillians dashboard matching tracked areas
[fix bug 851464] Added detailed voting view and vote view.
Merge pull request #374 from akatsoulas/851464

[fix bug 851464] Added detailed voting view and vote view.
[fix bug 856278] Vouched mozillians appear as 'Mozillian attendee' in events.
Merge pull request #378 from akatsoulas/856278

[fix bug 856278] Vouched mozillians appear as 'Mozillian attendee' in ev...
[Fix bug 855491] Export mentor field in ProfileResource API
[Fix bug 854453] Fix newline format in iCAL description field
Merge pull request #371 from johngian/854453

[Fix bug 854453] Fix newline format in iCAL description field
[fix bug 858545] Update developer environment and documentation.
Merge pull request #380 from glogiotatidis/update-local-instructions

Update developer environment and documentation.
[fix bug 857959] Replaced django forms with happyforms.