recovered css from old application.scss

was removed in e188782a

use "CONVERT TO" to change the encoding for the table and all character columns

First iteration to update Help section

Changes from Fla

mysql changes the type of TEXT columns to MEDIUMTEXT with "CONVERT TO",
but we don't want this, so change this columns back to TEXT.

see: https://bugs.mysql.com/bug.php?id=31291

see: https://dev.mysql.com/doc/refman/5.6/en/charset-conversion.html

This prevents connecting to the database on rake assets:precompile,
which fails in certain build environments.

Running git blame on this and figuring out what in gods name this
is for, is for another time.

Add link to custom splash page wiki examples

Move default_url_options to application.rb

Don't add mentions and reshares to all streams

Apparently the subclasses got loaded before the initializers
were run, thus not inheriting the config.

Fix missing button styles in donate and admin sections

Fixes #5834

Remove border from conversation stream

Bump markdown-it

Contacts page: remove broken title from 'Start a conversation' button

Update javascript styleguide

Replace default.html with a regular view

So we can correctly reference the images

Generate error pages on assets:precompile

Fix layout regression: missing header on search page

This allows us to reuse any CSS we have, unify
their look and unify their look with the regular
page design.

This works by instantiating ActionView and rendering
templates in a rake task.

Inspired by the errgent gem.

Add 'no contacts in this aspect yet' message