Filter and localize pagination prev and next text

[r-a-y]

Attached patch is against r4947 and allows theme developers and translators to modify the paginated "prev_text" and "next_text" values.

By default, these values are ← and → respectively.

Patch also removes a bunch of whitespace in these files.

[boonebgorges]

Thanks, r-a-y. What's the justification for l18n + filters? Do we do something similar elsewhere in BP?

[DJPaul]

Everything going through gettext can already be filtered (​for example).

[DJPaul]

I'm going to put this patch in, minus the extra filters, and we can re-open the ticket if there's a particularly good reason :) Thanks for the patch, r-a-y

[djpaul]

(In [4955]) Fix pagination symbol i18n. Tidy whitespace. Fixes #3456, props r-a-y

[r-a-y]

Wasn't aware of the 'gettext' filter until just now! This is great!
​http://codex.wordpress.org/Plugin_API/Filter_Reference/gettext

We do filters + localization in:

• Activity 'Read More' text - ​http://buddypress.trac.wordpress.org/browser/tags/1.5-beta-2/bp-activity/bp-activity-filters.php#L189
• BP core time since - ​http://buddypress.trac.wordpress.org/browser/tags/1.5-beta-2/bp-core/bp-core-functions.php#L610
• No-reply email address - ​http://buddypress.trac.wordpress.org/browser/tags/1.5-beta-2/bp-core/bp-core-filters.php#L53
• A few activity actions

Might want to change these as well?