When option is enabled geany automatically reloads files which
have changed on disk but have no changes in the buffer.
When the option is disabled (default) geany shows the reload
dialog as before.

Tested @vfaronov 

Say hello to Geany 1.32 "Bemos"!

Fix converting color to hex for insertion

* Add newly standardized HTML elements to filetypes.html

To enable highlighting them as keywords in HTML documents, add
the following elements defined in W3C HTML 5.1
(https://www.w3.org/TR/html51/fullindex.html#index-elements):

- menuitem
- picture
- rb
- rtc
- template

as well as the following elements defined in WHATWG HTML Living Standard
(https://html.spec.whatwg.org/multipage/indices.html#elements-3):

- math
- slot
- svg

* Add newly standardized HTML attributes to filetypes.html

To enable highlighting them as keywords in HTML documents, add
30 attributes defined in W3C HTML 5.1
(https://www.w3.org/TR/html51/fullindex.html#attributes-table)
and a further 15 attributes defined in the WHATWG HTML Living Standard
(https://html.spec.whatwg.org/multipage/indices.html#attributes-3).

* Sort the list of HTML keywords

Fixes #1527.

In win32_show_color_dialog, utils_scale_round is not necessary at all
because Get{R,G,B}Value [1] already return 0..255, which we can immediately
render as hex.

[1] https://msdn.microsoft.com/en-us/library/windows/desktop/dd144923.aspx

* cmake cs keywords

* cs and cmake keywords update

c sharp keywords https://msdn.microsoft.com/en-us/library/x53a06bb.aspx

* reviewed cmake keywords

reviewed cmake keywords according to https://cmake.org/cmake/help/v3.0/manual/cmake-commands.7.html

* public private interface

* cmake alphabetical kws

* comments

Signed-off-by: Samsul Ma'arif <hay@samsul.web.id>

Update keywords with https://haxe.org/manual/expression.html#keywords.

`trace` is kept although it's not a keyword, because it was already
there and http://try.haxe.org/ highlights it identically to some other
keywords.

Fixes #1467.

* Update obsolete references to GLib 2.27/28 in HACKING

Fixes #1476.

* Replace obsolete gcc -W option with -Wextra in HACKING

According to gcc --help=warnings, -W is a deprecated option
and -Wextra should be used instead.

Escaped newlines were properly handled inside preprocessor directives,
but not otherwise.

Seeing `continue` here suggests the code used to work a long time ago
but some loop refactoring broke it, as now it would not stay in the
loop unless in a preprocessor directive.  Or maybe it only ever worked
for preprocessor directives, and the `continue` was superfluous?

Fixes #1370.

When plugin calls plugin_set_key_group() several times for the same
group (when creating keybindings dynamically and needs to reset them),
it crashes with the current code the second time it gets called.

The reason is that group->plugin_keys is an array into which entries of
group->key_items point and when calling

g_ptr_array_set_size(group->key_items, 0);

it calls free_key_binding() for every item - when these items are
deallocated by g_free(group->plugin_keys) previously, calls of
free_key_binding() reference an invalid memory.

Just first resizing group->key_items (and calling free_key_binding() for
its items) and freeing group->plugin_keys afterwards fixes the problem.

Add parfor to Matlab keyword list

Add `parfor` to the list of keywords to be highlighted in Matlab script sources. `parfor` is a Matlab keyword that can be used in place of `for` to achieve parallel processing.

We actually need to override LC_TIME if it is set, so use LC_ALL which
overrides everything rather than LANG that is used as a fallback.

Fix copyright years translations