Improve performance of Location constructor, by avoiding exception throwing when path is not an URL
Move Bio-Formats downloads page under the main repository

- Convert Bio-Formats downloads page into Sphinx format. Page can be generated
as usual with `make html` and sphinx_theme can be applied as for the regular
Bio-Formats documentation.
- Add release download page build as part of the Travis build
Fix indents in index.html
Remove develop-specific artifacts
Fix usage of tilde for Matlab versions earlier than R2009b
Drop typecasting workaround for Matlab versions earlier than 7.1
Add note about minimum supported version of MATLAB in the documentation
Re-expose the OME editor artifacts in the component table
Add version note to the developers MATLAB page
Also capitalize MATLAB in the developers documentation page
Merge pull request #688 from sbesson/matlab_versioncheck

Fix bfGetReader for MATLAB R2009a and earlier
ND2Handler: parse numbers defensively

Several numerical parsing methods throw NumberFormatException when
the input string is not actually a number. In particular:

* Integer.parseInt(String)
* Double.parseDouble(String)
* new Integer(String)
* new Double(String)

The ND2 handler parses a large number of string key/value pairs,
converting values into numbers in many cases. But in almost every case,
no error handling was done in case the input value was not a number.

This change adds a blanket try/catch for NumberFormatException around
areas that parse lots of numbers, emitting a warning for any
non-conforming key/value pairs. This allows parsing to continue,
hopefully resulting in a less fragile ND2 reader.

It also catches NumberFormatException separately within the nested
TextInfoItem parse loop, so that parsing of TextInfoItem entries fail
individually rather than all-or-nothing.

Note that this change is nearly all whitespace indentation; the easiest
way to view the "real" change is using "git show -b" on the commit.
Merge pull request #691 from ctrueden/nd2-defensive-parsing

ND2 defensive parsing
Merge pull request #690 from sbesson/rebased/dev_4_4/downloads_page

Bio-Formats downloads page (rebased onto dev_4_4)
Merge pull request #683 from kuba97531/dev_4_4

Avoid throwing exception when parsing URL in Location constructor