Proposal on enhancements to Deviation Plugin.

[Corsair-63]

Hi,

I've been following the plugin and from the Cruise and Sailing forum has been found some enhancements to have this marvellous plugin working great.

so, there are some ideas arisen:
1 - internationalization of plugin, first topic, include plugin translations in Crowdin web together with all OCPN project.
2 - internationalization of plugin, second topic, there is a problem with the input data that makes OCPN crashes, when in a system is setup as decimal "," because the plugin only understands decimal ".", so, should be fine that data entered automatically by it and the manual data entered by user would match with the defined decimal notation of the system. bearing in mind that areas in the world considering one or the other as decimal notation are remarkably similar, being little more considers decimal ",". https://en.wikipedia.org/wiki/Decimal_separator
3 - there are some doubtful messages in the plugin or not understood by non-native English speakers, e.g., "Righthand bearing" could be "relative bearing"? "Magnetic bearing"?
4 - Another option of compass adjustment could be in our case that we use not have gyro-compas to take the deviation from the readings of COG (steady/average for X seconds) and the compass reading, done by number of compass adjuster when there are no visual references and no gyrocompass.
5 - Considering an automatic registry of deviations when setup in plugin, so sailing for a period and plugin registering COG & Compass courses at various courses and with steady heads, at last the system could make a real deviation curve of the state of the compass.
6 - some more inputs from users that could share.

[Corsair-63]

Number:
1 done and translated to Spanish.
3 still doubtful but close to be proper translation identified.
let's follow the improvements.

[Corsair-63]

3 - Thanks to Rooiedirk has put some light in the translation of "Righthand bearing" as per definition in Spanish is "Marcación", angle from the Bow measured clockwise to Starboard (+) in old times also to Port, anticlockwise (-) in both cases only till the vessel's aft (180 degrees). nowadays is used from 0 to 360 degrees from the bow (clockwise, it's starting from Starboard side).