Short open tag leads to stats graph not working on some servers
Regression: optimisation code broke downloads. Thank you, Sander!
Fix all categories shown for each visual group

Lost in the commit to bootstrap the latest view. Currently all
categories are shown for each visual group. This commit fixes this
issue and only the categories for the specific visual group are shown.
Merge pull request #3 from sanderpotjer/development

Fix all categories shown for each visual group
Same categories fix for browses view
Merge pull request #4 from sanderpotjer/development

Same categories fix for browses view
Allow Visual Group filtering for latest view
Merge pull request #5 from sanderpotjer/development

Allow Visual Group filtering for latest view
Fixing wrong vgroupID keys that result in display issues

The $vgroupID => $vgroup is causing issue as the key is not the same as
the vgroup ID, this is caused by the vgroups array_merge in the
view.html.php files.
Merge pull request #6 from sanderpotjer/development

Fixing wrong vgroupID keys that result in display issues
Language update
# [MEDIUM] Caching worked erratically
Regression: no items shown when no visual groups are being used
Bringing in line with changes in FOF 2.1
Performance fix in logs view
Clear FOF cache on update wasn't really working
Fix ArsModelDownloads which caused Akeeba Live Update to malfunction and likely caused the blank item page issue

Blank item page issue: https://www.akeebabackup.com/support/akeeba-release-system/17087-blank-item-page.html
Fix undefined $size variables. I think this is ok, but please verify.
Merge pull request #7 from jurianeven/fix-ArsModelDownloads

Fixes for ArsModelDownloads
Fix undefined $params in frontend templates