Added installer scripts

pre-updated docs download links

Fixed my previous fix for release builds

Another test to fix online docs/pages

Tidied some dialog code

Fixed tiff export some more

TIFF export wasn't quite fixed. Should work for everything now...

MAJOR update

Well I fucked the commits by merging the gh-pages branch like an utter
tit.
So here are all the commits I made into one big, unreadable mess.

Added:
Axes widget that rotates with basis angle (uses the axes resource and
svg file)
Ability to export colour bar as an RGB image. Size is hardcoded.
Labels on to distorition images.

Fixed:
Memory leak when updating images due to stupid pointers.
MAJOR bug where eigen matrices where not initialised to zero (this only
happened for smaller images?)
Small tweaks to usability, right click options are grayed out until they
are valid. Finding the g vector has a fail case. Errors when opening a
small image (widht or height < 3)
Tiff images now open the right way up.

probably a ton more...

Fixed output error because of "/" in filenames.

Export used combo box text that contain "/". Removed with simple QString
remove method.

Fixed reuse of refinement area bug

On successful performance of strain, repeating will ask user to "use
same area" for refinement for second g-vector, even if first g-vector
was not refined.

Add license