[show-hint addon] Fix widget horizontal positioning

Closes #2983
[spreadsheet mode] Add
[spreadsheet mode] Integrate

Issue #2976
[vim] paragraph text object should be linewise
Improve Soy indentation
[soy mode] Fix indentation of else and elseif

Also turn off reindentation inside strings and comments.

Issue #2980
Use attribute rather than expando property for ignoring events

Also cause widgets with addWidget to have their events ignored.

See http://discuss.codemirror.net/t/click-to-clear-marker-created-with-cm-addwidget/98
[emacs] Multiple cursor delete support

Fixes #2470
[tern addon] Add showDocs method
[soy mode] Improve indentation of strings and /template
[soy mode] Fix indentation of {switch}
Always patch display when the view array changed
[front page] Remove flattr link, rename gittip to gratipay
[project page] Link to Patreon
[soy mode] Support delegates
[simple mode addon] Remove unused argument

Issue #2991