[PATCH] FeedMergeBridge: shorter feed url

[trvny]

bridges/FeedMergeBridge.php

/**
 * TODO: Consider a strategy which produces a shorter feed url
 */

Adds two ways to specify feeds without ten separate params:

• feeds: one url per line (or comma-separated)
• c: deflate+base64url of the newline list, for a much shorter url

FeedMergeBridge.php

[dvikan]

can u pls make a pr