[indicators] Align indicators correctly to grid units

[John Lea]

Align indicators correctly to grid units. Most indicators need 3gu, but the bluetooth indicator needs only 2gu and the time requires 4gu.

See attached visual designs which include a grid unit underlay showing the correct spacing.

[Nick Dedekind (nick-dedekind)]

I don't want to hardcode width values into specific indicators. This will become difficult to maintain later on.
For labels: I can round up the widths to the closest gu. If the "10:00" string takes between 3-4gu, then it will be 4gu.
For icons: We need icons of correct aspect to do custom widths. If you want a 3gu icon in the panel (3gu high), then they must be 1:1 aspect including padding. If you want a 2gu icon then it must be between 2:4 and 2:3 padding inclusive, etc.

Note: For svgs, the document size must be the correct aspect.
I've included an example of the bluetooth icon we need to accomplish this.

[PS Jenkins bot (ps-jenkins)]

Fix committed into lp:unity8 at revision 514, scheduled for release in unity8, milestone phone-v1-freeze

[Launchpad Janitor (janitor)]

This bug was fixed in the package unity8 - 7.84+14.04.20131128.2-0ubuntu1

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unity8 (7.84+14.04.20131128.2-0ubuntu1) trusty; urgency=low

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