Gallery update

[ralsina]

Fix #1121 and #1073

[ralsina]

This should have basically no visible effect except image titles will be nicer.

[Kwpolska]

Looks sane. The invariance test fails at:

-<a href="tesla_tower1_lg.jpg" class="thumbnail image-reference" title="Output/galleries/demo/tesla tower1 lg">
-                <img src="tesla_tower1_lg.thumbnail.jpg" alt="Output/galleries/demo/tesla tower1 lg"></a>
+<a href="tesla_tower1_lg.jpg" class="thumbnail image-reference" title="Tesla tower1 lg">
+                <img src="tesla_tower1_lg.thumbnail.jpg" alt="Tesla tower1 lg"></a>

This looks like a desired change. If it is, just pull it and trigger an invariance rebuild (in that order; be quick or you might need to repeat the build on Travis*). If not, fix it.

* alternatively, you can switch the invariance branch to gallery_update, wait for it to build, pull, and set the invariance branch back to master. This is hacky, but unfortunately we can’t do any better.

[ralsina]

Thanks @Kwpolska !

[Kwpolska]

The 2.7 build crashed, for obvious reasons. I’m triggering a rebuild right now.