Merge branch '12-doxygen-style' into 'develop'

Resolve "Generated Doxygen HTML looks terrible and not GAMS-ish"

Closes #12

See merge request devel/gdx!19

.gitignore

@@ -15,7 +15,6 @@
 /gdxtest.xcodeproj/project.xcworkspace/xcuserdata/
 /gdxtest.xcodeproj/xcuserdata/
 /zlib/
-/docs/
 /src/gclgms.h
 /src/gdxcc.c
 /src/gdxcc.h

Doxyfile

@@ -1330,7 +1330,7 @@ HTML_STYLESHEET        =
 # documentation.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-HTML_EXTRA_STYLESHEET  =
+HTML_EXTRA_STYLESHEET  = docs/style/doxygen-awesome.css
 
 # The HTML_EXTRA_FILES tag can be used to specify one or more extra images or
 # other source files which should be copied to the HTML output directory. Note
@@ -1353,7 +1353,7 @@ HTML_EXTRA_FILES       =
 # The default value is: AUTO_LIGHT.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-HTML_COLORSTYLE        = AUTO_LIGHT
+HTML_COLORSTYLE        = LIGHT
 
 # The HTML_COLORSTYLE_HUE tag controls the color of the HTML output. Doxygen
 # will adjust the colors in the style sheet and background images according to
@@ -1653,7 +1653,7 @@ DISABLE_INDEX          = NO
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-GENERATE_TREEVIEW      = NO
+GENERATE_TREEVIEW      = YES
 
 # When both GENERATE_TREEVIEW and DISABLE_INDEX are set to YES, then the
 # FULL_SIDEBAR option determines if the side bar is limited to only the treeview