Configuration - notify backend when quad_truncate gets changed

[himdel]

without miqSelectPickerEvent, any change in quad_truncate never gets propagated to the backend
=> adding miqSelectPickerEvent

introdued in #4034

Also made sure that indent of the javascript always matches the indent of the select itself,
fixed style issues (double quotes to single quotes, added semicolons),
removed useless gettext around field names (not descriptions),
and made sure miqInitSelectPicker ends up getting called exactly once.

Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1650461

Cc @skateman

[himdel]

(without the cleanup, the diff is:

+              :javascript
+                miqSelectPickerEvent('quad_truncate', '#{url}');

)

[skateman]

I'm always getting complaints that I am creating too big commits 😉 could be this separated into two?

[kbrock]

Thanks @himdel

[himdel]

Rebased and split :)

[miq-bot]

Checked commits https://github.com/himdel/manageiq-ui-classic/compare/eaa3dfc2085cb2378a65a6384f6edc706f3cd09f~...8c98e8fdbcee7221d8a3ee45dcc60470b71aba93 with ruby 2.3.3, rubocop 0.52.1, haml-lint 0.20.0, and yamllint 1.10.0
1 file checked, 1 offense detected

**

• 💣 💥 🔥 🚒 - Linter/Haml - Linter::Haml STDERR:

warning: parser/current is loading parser/ruby23, which recognizes
warning: 2.3.6-compliant syntax, but you are running 2.3.3.
warning: please see https://github.com/whitequark/parser#compatibility-with-ruby-mri.

[skateman]

[simaishi]

Hammer backport details:

$ git log -1
commit 7c7808600cbe01b8627268e2d608d0a290cf1497
Author: Milan Zázrivec <[email protected]>
Date:   Tue Nov 20 12:31:32 2018 +0100

    Merge pull request #4942 from himdel/quad-event-bz1650461
    
    Configuration - notify backend when `quad_truncate` gets changed
    
    (cherry picked from commit 29734e6ddc0de970dc133570d7252aee62741e8a)
    
    https://bugzilla.redhat.com/show_bug.cgi?id=1650461