Move the button to create permanode into toolbar.

Also:
* Make the entire BlobItemController a drop target for new files,
  except for when over a set, then the set is the target.
* Minor visual refinements to highlight states during dragging.
* Fix bugs/flicker in dragdrop code.
* Fix bug where there is an empty button in toolbar before the first
  item is selected.

Change-Id: I3c40a476395c885477e1316e6ff168399640e347
camput attr: support -del

Change-Id: I28460fed5b572ba9a83cfcb04f38e42124fa723f
Merge "camput attr: support -del"
Move to "G+-style" selection.

To select an item, click the checkmark that overlays on rollover.
To navigate, just click anywhere else on the item.

Also move selection from additive by default rather than exclusive.

Change-Id: I47e6ca1942fe1fdaaf615f6ab0e0a547f1a51735
Merge branch 'master' of https://camlistore.googlesource.com/camlistore into media
Further visual refinements to layout of homepage:

* Increase default image size a few settings
* Increase gutter between items
* Remove extraneous padding and whitepsace
* Remove unneeded gigantic heading
* Move build version into statusbar
* Change algorithm for fitting rows -- instead of preferring to clip
  edges of image, instead prefer to adjust height of rows. I find it
  looks more interesting visually when the widths of the images vary
  more.
* Replace folder and file icon with something better looking
* Swap order of + and - buttons in toolbar, they were backward from
  what is typical

Change-Id: Idfe85a813926c2c9eea774a86046df62ecacd45c
Added missing var 'which' used in a fmt.Errorf

Change-Id: I0b9a7c6a0c7e523a75f3e5beebbd860e0092a81f
C+A: Add Steve Phillips

Change-Id: I7716db45e355b6c721c009485e5a97835d53932e
Misc cleanups

Change-Id: I9183ca1ec7a98df210373f27ec3493c996f00f74
Merge branch 'master' of https://camlistore.googlesource.com/camlistore
Merge "Added missing var 'which' used in a fmt.Errorf"
Merge branch 'master' of https://camlistore.googlesource.com/camlistore into media
sync